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Available in 36 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-36" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">36 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A3%D9%88%D9%84%D9%8A_%D9%8A%D9%88%D9%87%D8%A7%D9%86_%D8%AF%D8%A7%D9%84" title="أولي يوهان دال – Arabic" lang="ar" hreflang="ar" data-title="أولي يوهان دال" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Ole-Yohan_Dal" title="Ole-Yohan Dal – Azerbaijani" lang="az" hreflang="az" data-title="Ole-Yohan Dal" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%D9%88%D9%84%D9%87-%DB%8C%D9%88%D9%87%D8%A7%D9%86_%D8%AF%D8%A7%D9%84" title="اوله-یوهان دال – South Azerbaijani" lang="azb" hreflang="azb" data-title="اوله-یوهان دال" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%89%E0%A6%B2%E0%A6%BE%E0%A6%B9%E0%A7%8D%E2%80%8C-%E0%A6%87%E0%A6%AF%E0%A6%BC%E0%A7%8B%E0%A6%B9%E0%A6%BE%E0%A6%A8_%E0%A6%A1%E0%A6%BE%E0%A6%B2" title="উলাহ্‌-ইয়োহান ডাল – Bangla" lang="bn" hreflang="bn" data-title="উলাহ্‌-ইয়োহান ডাল" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Catalan" lang="ca" hreflang="ca" data-title="Ole-Johan Dahl" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Czech" lang="cs" hreflang="cs" data-title="Ole-Johan Dahl" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Danish" lang="da" hreflang="da" data-title="Ole-Johan Dahl" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – German" lang="de" hreflang="de" data-title="Ole-Johan Dahl" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Estonian" lang="et" hreflang="et" data-title="Ole-Johan Dahl" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Spanish" lang="es" hreflang="es" data-title="Ole-Johan Dahl" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Esperanto" lang="eo" hreflang="eo" data-title="Ole-Johan Dahl" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D9%88%D9%84%D9%87-%DB%8C%D9%88%D9%87%D8%A7%D9%86_%D8%AF%D8%A7%D9%84" title="اوله-یوهان دال – Persian" lang="fa" hreflang="fa" data-title="اوله-یوهان دال" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – French" lang="fr" hreflang="fr" data-title="Ole-Johan Dahl" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%95%D5%AC%D5%A5-%D5%85%D5%B8%D5%B0%D5%A1%D5%B6_%D4%B4%D5%A1%D5%AC" title="Օլե-Յոհան Դալ – Armenian" lang="hy" hreflang="hy" data-title="Օլե-Յոհան Դալ" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Croatian" lang="hr" hreflang="hr" data-title="Ole-Johan Dahl" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Indonesian" lang="id" hreflang="id" data-title="Ole-Johan Dahl" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Italian" lang="it" hreflang="it" data-title="Ole-Johan Dahl" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Malagasy" lang="mg" hreflang="mg" data-title="Ole-Johan Dahl" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%92%E0%B4%B2%E0%B5%86_%E0%B4%9C%E0%B5%8A%E0%B4%B9%E0%B4%BE%E0%B5%BB_%E0%B4%A1%E0%B4%BE%E0%B5%BD" title="ഒലെ ജൊഹാൻ ഡാൽ – Malayalam" lang="ml" hreflang="ml" data-title="ഒലെ ജൊഹാൻ ഡാൽ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%A7%D9%88%D9%84%D9%89_%D9%8A%D9%88%D9%87%D8%A7%D9%86_%D8%AF%D8%A7%D9%84" title="اولى يوهان دال – Egyptian Arabic" lang="arz" hreflang="arz" data-title="اولى يوهان دال" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Dutch" lang="nl" hreflang="nl" data-title="Ole-Johan Dahl" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%AA%E3%83%BC%E3%83%AC%EF%BC%9D%E3%83%A8%E3%83%8F%E3%83%B3%E3%83%BB%E3%83%80%E3%83%BC%E3%83%AB" title="オーレ＝ヨハン・ダール – Japanese" lang="ja" hreflang="ja" data-title="オーレ＝ヨハン・ダール" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Ole-Johan Dahl" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Ole-Johan Dahl" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Polish" lang="pl" hreflang="pl" data-title="Ole-Johan Dahl" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Portuguese" lang="pt" hreflang="pt" data-title="Ole-Johan Dahl" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Romanian" lang="ro" hreflang="ro" data-title="Ole-Johan Dahl" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%94%D0%B0%D0%BB%D1%8C,_%D0%9E%D0%BB%D0%B5-%D0%99%D0%BE%D1%85%D0%B0%D0%BD" title="Даль, Оле-Йохан – Russian" lang="ru" hreflang="ru" data-title="Даль, Оле-Йохан" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Slovak" lang="sk" hreflang="sk" data-title="Ole-Johan Dahl" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9E%D0%BB%D0%B5-%D0%88%D0%BE%D1%85%D0%B0%D0%BD_%D0%94%D0%B0%D0%BB" title="Оле-Јохан Дал – Serbian" lang="sr" hreflang="sr" data-title="Оле-Јохан Дал" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Ole-Johan Dahl" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Finnish" lang="fi" hreflang="fi" data-title="Ole-Johan Dahl" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Swedish" lang="sv" hreflang="sv" data-title="Ole-Johan Dahl" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Ole-Johan_Dahl" title="Ole-Johan Dahl – Turkish" lang="tr" hreflang="tr" data-title="Ole-Johan Dahl" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A3%D0%BB%D0%B5-%D0%AE%D0%B3%D0%B0%D0%BD_%D0%94%D0%B0%D0%BB" title="Уле-Юган Дал – Ukrainian" lang="uk" hreflang="uk" data-title="Уле-Юган Дал" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A5%A7%E5%88%A9-%E7%B4%84%E7%BF%B0%C2%B7%E9%81%94%E7%88%BE" title="奧利-約翰·達爾 – Chinese" lang="zh" hreflang="zh" data-title="奧利-約翰·達爾" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q92745#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu 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class="infobox-above" style="font-size:125%;"><div class="fn">Ole-Johan Dahl</div></th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Ole-Johan_Dahl.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/7/7a/Ole-Johan_Dahl.jpg/220px-Ole-Johan_Dahl.jpg" decoding="async" width="220" height="311" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/7/7a/Ole-Johan_Dahl.jpg 1.5x" data-file-width="265" data-file-height="375" /></a></span></td></tr><tr><th scope="row" class="infobox-label">Born</th><td class="infobox-data"><span style="display:none">(<span class="bday">1931-10-12</span>)</span>12 October 1931<br /><div style="display:inline" class="birthplace"><a href="/wiki/Mandal,_Norway" title="Mandal, Norway">Mandal, Norway</a></div></td></tr><tr><th scope="row" class="infobox-label">Died</th><td class="infobox-data">29 June 2002<span style="display:none">(2002-06-29)</span> (aged 70)<br /><div style="display:inline" class="deathplace"><a href="/wiki/Asker" title="Asker">Asker</a>, Norway</div></td></tr><tr><th scope="row" class="infobox-label">Alma mater</th><td class="infobox-data"><a href="/wiki/University_of_Oslo" title="University of Oslo">University of Oslo</a></td></tr><tr><th scope="row" class="infobox-label">Known for</th><td class="infobox-data"><a href="/wiki/Simula" title="Simula">Simula</a><br /><a href="/wiki/Object-oriented_programming" title="Object-oriented programming">Object-oriented programming</a></td></tr><tr><th scope="row" class="infobox-label">Awards</th><td class="infobox-data"><a href="/wiki/Turing_Award" title="Turing Award">Turing Award</a> (2001)<br /><a href="/wiki/IEEE_John_von_Neumann_Medal" title="IEEE John von Neumann Medal">IEEE John von Neumann Medal</a> (2002)</td></tr><tr><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"><b>Scientific career</b></td></tr><tr><th scope="row" class="infobox-label">Fields</th><td class="infobox-data category"><a href="/wiki/Computer_science" title="Computer science">Computer science</a></td></tr><tr><th scope="row" class="infobox-label">Institutions</th><td class="infobox-data"><a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a><br />University of Oslo</td></tr><tr style="display:none"><td colspan="2"> </td></tr></tbody></table> <p><b>Ole-Johan Dahl</b> (12 October 1931 – 29 June 2002) was a Norwegian <a href="/wiki/Computer_scientist" title="Computer scientist">computer scientist</a>. Dahl was a professor of computer science at the <a href="/wiki/University_of_Oslo" title="University of Oslo">University of Oslo</a> and is considered to be one of the fathers of <a href="/wiki/Simula" title="Simula">Simula</a> and <a href="/wiki/Object-oriented_programming" title="Object-oriented programming">object-oriented programming</a> along with <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Kristen Nygaard</a>.<sup id="cite_ref-BioLexicon_1-0" class="reference"><a href="#cite_note-BioLexicon-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Career">Career</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=1" title="Edit section: Career"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Dahl was born in <a href="/wiki/Mandal,_Norway" title="Mandal, Norway">Mandal, Norway</a>. He was the son of Finn Dahl (1898–1962) and Ingrid Othilie Kathinka Pedersen (1905–80). When he was seven, his family moved to <a href="/wiki/Drammen" title="Drammen">Drammen</a>. When he was thirteen, the whole family fled to Sweden during the <a href="/wiki/German_occupation_of_Norway" title="German occupation of Norway">German occupation of Norway</a> in <a href="/wiki/World_War_II" title="World War II">World War II</a>. After the war's end, Dahl studied numerical <a href="/wiki/Mathematics" title="Mathematics">mathematics</a> at the University of Oslo.<sup id="cite_ref-BioLexicon_1-1" class="reference"><a href="#cite_note-BioLexicon-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Dahl became a full <a href="/wiki/Professor" title="Professor">professor</a> at the <a href="/wiki/University_of_Oslo" title="University of Oslo">University of Oslo</a> in 1968 and was a gifted teacher as well as researcher. Here he worked on <i>Hierarchical Program Structures</i>, probably his most influential publication, which appeared co-authored with <a href="/wiki/C.A.R._Hoare" class="mw-redirect" title="C.A.R. Hoare">C.A.R. Hoare</a> in the influential book <i>Structured Programming</i> of 1972 by Dahl, <a href="/wiki/Edsger_Dijkstra" class="mw-redirect" title="Edsger Dijkstra">Edsger Dijkstra</a>, and Hoare, perhaps the best-known academic book concerning software in the 1970s. As his career advanced, Dahl grew increasingly interested in the use of <a href="/wiki/Formal_methods" title="Formal methods">formal methods</a>, to rigorously reason about object-orientation for example. His expertise ranged from the practical application of ideas to their formal mathematical underpinning to ensure the validity of the approach.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Dahl is widely accepted as Norway's foremost computer scientist. With Kristen Nygaard, he produced the initial ideas for object-oriented (OO) programming in the 1960s at the <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a> (Norsk Regnesentral (NR)) as part of the <a href="/wiki/Simula" title="Simula">Simula</a> I (1961–1965) and Simula 67 (1965–1968) <a href="/wiki/Simulation" title="Simulation">simulation</a> <a href="/wiki/Programming_language" title="Programming language">programming languages</a>, which began as an extended variant and <a href="/wiki/Subset" title="Subset">superset</a> of <a href="/wiki/ALGOL_60" title="ALGOL 60">ALGOL 60</a>.<sup id="cite_ref-CommonBase_4-0" class="reference"><a href="#cite_note-CommonBase-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Dahl and Nygaard were the first to develop the concepts of <a href="/wiki/Class_(computer_science)" class="mw-redirect" title="Class (computer science)">class</a>, <a href="/wiki/Subclass_(computer_science)" class="mw-redirect" title="Subclass (computer science)">subclass</a> (allowing implicit <a href="/wiki/Information_hiding" title="Information hiding">information hiding</a>), <a href="/wiki/Inheritance_(object-oriented_programming)" title="Inheritance (object-oriented programming)">inheritance</a>, <a href="/wiki/Dynamic_object_creation" class="mw-redirect" title="Dynamic object creation">dynamic object creation</a>, etc., all important aspects of the OO paradigm. An <i>object</i> is a self-contained component (with a data structure and associated procedures or <i>methods</i>) in a software system. These are combined to form a complete system. The object-oriented approach is now pervasive in modern <a href="/wiki/Software_development" title="Software development">software development</a>, including widely used imperative programming languages such as <a href="/wiki/C%2B%2B" title="C++">C++</a> and <a href="/wiki/Java_(programming_language)" title="Java (programming language)">Java</a>. </p><p>He received the <a href="/wiki/Turing_Award" title="Turing Award">Turing Award</a> for his work in 2001 (with <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Kristen Nygaard</a>). He received the 2002 <a href="/wiki/Institute_of_Electrical_and_Electronics_Engineers" title="Institute of Electrical and Electronics Engineers">Institute of Electrical and Electronics Engineers</a> (IEEE) <a href="/wiki/John_von_Neumann_Medal" class="mw-redirect" title="John von Neumann Medal">John von Neumann Medal</a> (with Kristen Nygaard)<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> and was named Commander of the <a href="/wiki/Royal_Norwegian_Order_of_St._Olav" class="mw-redirect" title="Royal Norwegian Order of St. Olav">Royal Norwegian Order of St. Olav</a> in 2000.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Association_Internationale_pour_les_Technologies_Objets" title="Association Internationale pour les Technologies Objets">Association Internationale pour les Technologies Objets</a> named the <a href="/wiki/Dahl-Nygaard_Prize" class="mw-redirect" title="Dahl-Nygaard Prize">Dahl-Nygaard Prize</a> after Dahl.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Early_papers">Early papers</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=2" title="Edit section: Early papers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFDahl1957" class="citation book cs1">Dahl, O.-J (1957). <i>Multiple index countings on the Ferranti Mercury computer</i>. Oslo: <a href="/wiki/Norwegian_Defence_Research_Establishment" title="Norwegian Defence Research Establishment">Norwegian Defence Research Establishment</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Multiple+index+countings+on+the+Ferranti+Mercury+computer&rft.place=Oslo&rft.pub=Norwegian+Defence+Research+Establishment&rft.date=1957&rft.aulast=Dahl&rft.aufirst=O.-J&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlGarwick1958" class="citation book cs1">Dahl, O.-J.; Garwick, Jan V. (1958). <i>Programmer's handbook for the Ferranti Mercury Computer, Frederic at the Norwegian Defense Research Establishment – 2nd ed., Kjeller</i>. <a href="/wiki/Norwegian_Defence_Research_Establishment" title="Norwegian Defence Research Establishment">Norwegian Defence Research Establishment</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Programmer%27s+handbook+for+the+Ferranti+Mercury+Computer%2C+Frederic+at+the+Norwegian+Defense+Research+Establishment+%E2%80%93+2nd+ed.%2C+Kjeller&rft.pub=Norwegian+Defence+Research+Establishment&rft.date=1958&rft.aulast=Dahl&rft.aufirst=O.-J.&rft.au=Garwick%2C+Jan+V.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><i>Automatisk kodning: et prosjekt ved Forsvarets forskningsinstitutt</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Automatisk+kodning%3A+et+prosjekt+ved+Forsvarets+forskningsinstitutt&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBellDahl1963" class="citation report cs1">Bell, Vic; Dahl, Ole-Johan (1963). Simscript implementation (Report). Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=report&rft.btitle=Simscript+implementation&rft.place=Oslo&rft.pub=Norwegian+Computing+Center&rft.date=1963&rft.aulast=Bell&rft.aufirst=Vic&rft.au=Dahl%2C+Ole-Johan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlNygaard1965" class="citation book cs1">Dahl, Ole-Johan; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (1965). <i>Basic concepts of Simula: an ALGOL based simulation language</i>. Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Basic+concepts+of+Simula%3A+an+ALGOL+based+simulation+language&rft.place=Oslo&rft.pub=Norwegian+Computing+Center&rft.date=1965&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Nygaard%2C+Kristen&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><i><a href="/wiki/Simula" title="Simula">Simula</a>: a language for programming and description of discrete event systems: introduction and user's manual</i>. Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a>. 1965.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Simula%3A+a+language+for+programming+and+description+of+discrete+event+systems%3A+introduction+and+user%27s+manual&rft.place=Oslo&rft.pub=Norwegian+Computing+Center&rft.date=1965&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahl1966" class="citation book cs1">Dahl, Ole-Johan (1966). <i>Discrete event simulation languages: lectures delivered at the NATO summer school, Villard-de-Lans, September 1966</i>. Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Discrete+event+simulation+languages%3A+lectures+delivered+at+the+NATO+summer+school%2C+Villard-de-Lans%2C+September+1966&rft.place=Oslo&rft.pub=Norwegian+Computing+Center&rft.date=1966&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlNygaard1966" class="citation book cs1">Dahl, Ole-Johan; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (1966). <i>Simula: an ALGOL based simulation language</i>. Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Simula%3A+an+ALGOL+based+simulation+language&rft.place=Oslo&rft.pub=Norwegian+Computing+Center&rft.date=1966&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Nygaard%2C+Kristen&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlNygaard1966" class="citation journal cs1">Dahl, Ole-Johan; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (1966). <a rel="nofollow" class="external text" href="https://doi.org/10.1145%2F365813.365819">"Simula: an ALGOL-based simulation language"</a>. <i>Communications of the ACM</i>. <b>9</b> (9). <a href="/wiki/New_York_City" title="New York City">New York</a>: <a href="/wiki/Association_for_Computing_Machinery" title="Association for Computing Machinery">Association for Computing Machinery</a>: 671–678. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.1145%2F365813.365819">10.1145/365813.365819</a></span>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:11032334">11032334</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Communications+of+the+ACM&rft.atitle=Simula%3A+an+ALGOL-based+simulation+language&rft.volume=9&rft.issue=9&rft.pages=671-678&rft.date=1966&rft_id=info%3Adoi%2F10.1145%2F365813.365819&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A11032334%23id-name%3DS2CID&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Nygaard%2C+Kristen&rft_id=https%3A%2F%2Fdoi.org%2F10.1145%252F365813.365819&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlNygaard1967" class="citation book cs1 cs1-prop-location-test">Dahl, Ole-Johan; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (May 1967). "Class and subclass declarations". Written at Oslo. In Buxton, J. N. (ed.). <i>I: Simulation programming languages: Proceedings of the IFIP working conference on simulation programming languages</i>. <a href="/wiki/Amsterdam" title="Amsterdam">Amsterdam</a>, <a href="/wiki/North_Holland" title="North Holland">North Holland</a> (published 1968).</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Class+and+subclass+declarations&rft.btitle=I%3A+Simulation+programming+languages%3A+Proceedings+of+the+IFIP+working+conference+on+simulation+programming+languages&rft.place=Amsterdam%2C+North+Holland&rft.date=1967-05&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Nygaard%2C+Kristen&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_book" title="Template:Cite book">cite book</a>}}</code>: CS1 maint: location missing publisher (<a href="/wiki/Category:CS1_maint:_location_missing_publisher" title="Category:CS1 maint: location missing publisher">link</a>)</span> Organized by IFIP Technical Committee 2, programming languages; O.-J. Dahl, conference chairman.</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahl1968" class="citation book cs1">Dahl, Ole-Johan (1968). Genuys, F. (ed.). <i>Discrete event simulation languages</i>. London: <a href="/wiki/Academic_Press" title="Academic Press">Academic Press</a> (Programming languages: NATO Advanced Study Institute.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Discrete+event+simulation+languages&rft.place=London&rft.pub=Academic+Press+%28Programming+languages%3A+NATO+Advanced+Study+Institute&rft.date=1968&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlMyhrhaugNygaard1968" class="citation book cs1">Dahl, Ole-Johan; Myhrhaug, Bjørn; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (1968). <i><a href="/wiki/Simula" title="Simula">Simula</a> 67: Common Base Language</i>. Oslo: <a href="/wiki/Norwegian_Computing_Center" title="Norwegian Computing Center">Norwegian Computing Center</a> (Publication S; Revised 1970, Publication 22.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Simula+67%3A+Common+Base+Language&rft.place=Oslo&rft.pub=Norwegian+Computing+Center+%28Publication+S%3B+Revised+1970%2C+Publication+22&rft.date=1968&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Myhrhaug%2C+Bj%C3%B8rn&rft.au=Nygaard%2C+Kristen&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=3" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/List_of_pioneers_in_computer_science" title="List of pioneers in computer science">List of pioneers in computer science</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-BioLexicon-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-BioLexicon_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-BioLexicon_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNygaard" class="citation web cs1">Nygaard, Kristen. <a rel="nofollow" class="external text" href="https://snl.no/Ole-Johan_Dahl">"Ole-Johan Dahl"</a>. <i>Large Norwegian Encyclopedia</i><span class="reference-accessdate">. Retrieved <span class="nowrap">14 November</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Large+Norwegian+Encyclopedia&rft.atitle=Ole-Johan+Dahl&rft.aulast=Nygaard&rft.aufirst=Kristen&rft_id=https%3A%2F%2Fsnl.no%2FOle-Johan_Dahl&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRossen" class="citation web cs1">Rossen, Eirik. <a rel="nofollow" class="external text" href="https://nbl.snl.no/Kristen_Nygaard">"Kristen Nygaard"</a>. <i>Norwegian Biographical Lexicon</i>. Large Norwegian encyclopedia<span class="reference-accessdate">. Retrieved <span class="nowrap">1 May</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Norwegian+Biographical+Lexicon&rft.atitle=Kristen+Nygaard&rft.aulast=Rossen&rft.aufirst=Eirik&rft_id=https%3A%2F%2Fnbl.snl.no%2FKristen_Nygaard&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.mn.uio.no/ifi/english/about/ole-johan-dahl/">"Tribute to Ole-Johan Dahl"</a>. University of Oslo. 2002<span class="reference-accessdate">. Retrieved <span class="nowrap">14 November</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Tribute+to+Ole-Johan+Dahl&rft.pub=University+of+Oslo&rft.date=2002&rft_id=https%3A%2F%2Fwww.mn.uio.no%2Fifi%2Fenglish%2Fabout%2Fole-johan-dahl%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> <li id="cite_note-CommonBase-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-CommonBase_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDahlMyhrhaugNygaard1970" class="citation report cs1"><a class="mw-selflink selflink">Dahl, Ole-Johan</a>; Myhrhaug, Bjørn; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Nygaard, Kristen</a> (1970). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20131225084408/http://www.edelweb.fr/Simula/scb-1.pdf">Common Base Language</a> <span class="cs1-format">(PDF)</span> (Report). Norwegian Computing Center. p. 1.3.1. Archived from the original on 25 December 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">14 November</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=report&rft.btitle=Common+Base+Language&rft.pages=1.3.1&rft.pub=Norwegian+Computing+Center&rft.date=1970&rft.aulast=Dahl&rft.aufirst=Ole-Johan&rft.au=Myhrhaug%2C+Bj%C3%B8rn&rft.au=Nygaard%2C+Kristen&rft_id=http%3A%2F%2Fwww.edelweb.fr%2FSimula%2F%237&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span><span class="cs1-maint citation-comment"><code class="cs1-code">{{<a href="/wiki/Template:Cite_report" title="Template:Cite report">cite report</a>}}</code>: CS1 maint: unfit URL (<a href="/wiki/Category:CS1_maint:_unfit_URL" title="Category:CS1 maint: unfit URL">link</a>)</span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20060720182319/http://www.ieee.org/portal/pages/about/awards/pr/vonneupr.html">"Recipients IEEE John von Neumann Medal"</a>. <i><a href="/wiki/Institute_of_Electrical_and_Electronics_Engineers" title="Institute of Electrical and Electronics Engineers">Institute of Electrical and Electronics Engineers</a> (IEEE)</i>. Archived from <a rel="nofollow" class="external text" href="http://www.ieee.org/portal/pages/about/awards/pr/vonneupr.html">the original</a> on 20 July 2006.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Institute+of+Electrical+and+Electronics+Engineers+%28IEEE%29&rft.atitle=Recipients+IEEE+John+von+Neumann+Medal&rft_id=http%3A%2F%2Fwww.ieee.org%2Fportal%2Fpages%2Fabout%2Fawards%2Fpr%2Fvonneupr.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBlack2001" class="citation web cs1">Black, Andrew P. (2001). <a rel="nofollow" class="external text" href="https://amturing.acm.org/award_winners/dahl_6917600.cfm">"Ole-Johan Dahl"</a>. <i>ACM Awards</i>. Association for Computing Machinery<span class="reference-accessdate">. Retrieved <span class="nowrap">14 November</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ACM+Awards&rft.atitle=Ole-Johan+Dahl&rft.date=2001&rft.aulast=Black&rft.aufirst=Andrew+P.&rft_id=https%3A%2F%2Famturing.acm.org%2Faward_winners%2Fdahl_6917600.cfm&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://sites.google.com/aito.org/home/aito-dahl-nygaard?pli=1&authuser=1#h.mghfbijfburs">"Dahl-Nygaard Prize"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">7 December</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Dahl-Nygaard+Prize&rft_id=https%3A%2F%2Fsites.google.com%2Faito.org%2Fhome%2Faito-dahl-nygaard%3Fpli%3D1%26authuser%3D1%23h.mghfbijfburs&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOle-Johan+Dahl" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Sources">Sources</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=5" title="Edit section: Sources"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><i>From Object-Orientation to Formal Methods: Essays in Memory of Ole-Johan Dahl</i>, Olaf Owe, Stein Krogdahl and Tom Lyche (eds.), <a href="/wiki/Springer_Science%2BBusiness_Media" title="Springer Science+Business Media">Springer</a>, <a href="/wiki/Lecture_Notes_in_Computer_Science" title="Lecture Notes in Computer Science">Lecture Notes in Computer Science</a>, Volume 2635, 2004. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/3-540-21366-X" title="Special:BookSources/3-540-21366-X">3-540-21366-X</a>. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1007%2Fb96089">10.1007/b96089</a>.</li> <li>Pioneer who Prepared the Ground for Road to Java, <a href="/wiki/Jonathan_Bowen" title="Jonathan Bowen">Jonathan Bowen</a>. <i><a href="/wiki/The_Times_Higher_Education_Supplement" class="mw-redirect" title="The Times Higher Education Supplement">The Times Higher Education Supplement</a></i>, 1677:34, 4 February 2005.</li></ul> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Ole-Johan_Dahl&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20181023114653/http://www.olejohandahl.info/">Homepage – comprehensive amount of info, pictures, and biblio</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline 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href="/wiki/Template:ALGOL_programming" title="Template:ALGOL programming"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:ALGOL_programming" title="Template talk:ALGOL programming"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:ALGOL_programming" title="Special:EditPage/Template:ALGOL programming"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="ALGOL_programming" style="font-size:114%;margin:0 4em"><a href="/wiki/ALGOL" title="ALGOL">ALGOL</a> programming</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Programming_language_implementation" title="Programming language implementation">Implementations</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Technical_standard" title="Technical standard">Technical<br />standards</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ALGOL_58" title="ALGOL 58">ALGOL 58</a></li> <li><a href="/wiki/ALGOL_60" title="ALGOL 60">ALGOL 60</a></li> <li><a href="/wiki/ALGOL_68" title="ALGOL 68">ALGOL 68</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Dialect_(computing)" class="mw-redirect" title="Dialect (computing)">Dialects</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>ABC ALGOL</li> <li><a href="/wiki/ALCOR" title="ALCOR">ALCOR</a></li> <li><a href="/wiki/ALGO" title="ALGO">ALGO</a></li> <li><a href="/wiki/ALGOL_68C" title="ALGOL 68C">ALGOL 68C</a></li> <li><a href="/wiki/ALGOL_68-R" title="ALGOL 68-R">ALGOL 68-R</a></li> <li><a href="/wiki/ALGOL_68RS" title="ALGOL 68RS">ALGOL 68RS</a> (<a href="/wiki/ELLA_(programming_language)" title="ELLA (programming language)">ELLA</a>)</li> <li><a href="/wiki/ALGOL_68S" title="ALGOL 68S">ALGOL 68S</a></li> <li><a href="/wiki/ALGOL_N" title="ALGOL N">ALGOL N</a></li> <li><a href="/wiki/ALGOL_W" title="ALGOL W">ALGOL W</a></li> <li><a href="/wiki/ALGOL_X" title="ALGOL X">ALGOL X</a></li> <li><a href="/wiki/Atlas_Autocode" title="Atlas Autocode">Atlas Autocode</a> (<a href="/wiki/Edinburgh_IMP" title="Edinburgh IMP">Edinburgh IMP</a>)</li> <li><a href="/wiki/Burroughs_Large_Systems#ALGOL" title="Burroughs Large Systems">Burroughs ALGOL</a></li> <li><a href="/wiki/CORAL" title="CORAL">CORAL</a> 66</li> <li><a href="/wiki/Dartmouth_ALGOL_30" title="Dartmouth ALGOL 30">Dartmouth ALGOL 30</a></li> <li><a href="/wiki/DASK" title="DASK">DASK</a> ALGOL</li> <li><a href="/wiki/DG/L" title="DG/L">DG/L</a></li> <li><a href="/wiki/Elliott_ALGOL" title="Elliott ALGOL">Elliott ALGOL</a></li> <li><a href="/wiki/Executive_Systems_Problem_Oriented_Language" title="Executive Systems Problem Oriented Language">Executive Systems Problem Oriented Language</a> (ESPOL) → New Executive Programming Language (<a href="/wiki/NEWP" title="NEWP">NEWP</a>)</li> <li><a href="/wiki/FLACC" title="FLACC">FLACC</a></li> <li><a href="/wiki/IMP_(programming_language)" title="IMP (programming language)">IMP</a></li> <li><a href="/wiki/JOVIAL" title="JOVIAL">JOVIAL</a></li> <li><a href="/wiki/English_Electric_KDF9" title="English Electric KDF9">Kidsgrove</a> Algol</li> <li><a href="/wiki/MAD_(programming_language)" title="MAD (programming language)">MAD</a></li> <li><a href="/wiki/Mary_(programming_language)" title="Mary (programming language)">Mary</a></li> <li><a href="/wiki/NELIAC" title="NELIAC">NELIAC</a></li> <li><a href="/wiki/RTL/2" title="RTL/2">RTL/2</a></li> <li><a href="/wiki/S-algol" title="S-algol">S-algol</a>, <a href="/wiki/PS-algol" title="PS-algol">PS-algol</a>, <a href="/wiki/Napier88" title="Napier88">Napier88</a></li> <li><a href="/wiki/Simula" title="Simula">Simula</a></li> <li>Small Machine ALGOL Like Language (<a href="/wiki/SMALL" title="SMALL">SMALL</a>)</li> <li><a href="/wiki/SMIL_(computer)" title="SMIL (computer)">SMIL</a> ALGOL</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Formalism_(philosophy_of_mathematics)" title="Formalism (philosophy of mathematics)">Formalisms</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Jensen%27s_device" title="Jensen's device">Jensen's device</a></li> <li><a href="/wiki/Van_Wijngaarden_grammar" title="Van Wijngaarden grammar">Van Wijngaarden grammar</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Community_of_practice" title="Community of practice">Community</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Organizations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Professional_association" title="Professional association">Professional<br />associations</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ALCOR" title="ALCOR">ALCOR</a> Group</li> <li><a href="/wiki/Association_for_Computing_Machinery" title="Association for Computing Machinery">Association for Computing Machinery</a> (ACM)</li> <li><a href="/wiki/BSI_Group" title="BSI Group">BSI Group</a></li> <li><a href="/wiki/GOST" title="GOST">Euro-Asian Council for Standardization, Metrology and Certification</a> (EASC)</li> <li><a href="/wiki/International_Federation_for_Information_Processing" title="International Federation for Information Processing">International Federation for Information Processing</a> (IFIP) <a href="/wiki/IFIP_Working_Group_2.1" title="IFIP Working Group 2.1">IFIP Working Group 2.1</a></li> <li><a href="/wiki/Gesellschaft_f%C3%BCr_Angewandte_Mathematik_und_Mechanik" title="Gesellschaft für Angewandte Mathematik und Mechanik">Society of Applied Mathematics and Mechanics</a> (GAMM)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Business</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Burroughs_Corporation" title="Burroughs Corporation">Burroughs Corporation</a></li> <li><a href="/wiki/Elliott_Brothers_(computer_company)" title="Elliott Brothers (computer company)">Elliott Brothers</a></li> <li><a href="/wiki/Regnecentralen" title="Regnecentralen">Regnecentralen</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Education</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Case_Western_Reserve_University" title="Case Western Reserve University">Case Institute of Technology</a></li> <li><a href="/wiki/University_of_Edinburgh" title="University of Edinburgh">University of Edinburgh</a></li> <li><a href="/wiki/University_of_St_Andrews" title="University of St Andrews">University of St Andrews</a></li> <li><a href="/wiki/Manchester_University" class="mw-redirect" title="Manchester University">Manchester University</a></li> <li><a href="/wiki/Massachusetts_Institute_of_Technology" title="Massachusetts Institute of Technology">Massachusetts Institute of Technology</a> (MIT)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Government</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Royal_Radar_Establishment" title="Royal Radar Establishment">Royal Radar Establishment</a> (RRE)</li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ALGOL_58" title="ALGOL 58">ALGOL 58</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/John_Backus" title="John Backus">John Backus</a></li> <li><a href="/wiki/Friedrich_L._Bauer" title="Friedrich L. Bauer">Friedrich L. Bauer</a></li> <li><a href="/wiki/Hermann_Bottenbruch" title="Hermann Bottenbruch">Hermann Bottenbruch</a></li> <li><a href="/wiki/Charles_Katz" title="Charles Katz">Charles Katz</a></li> <li><a href="/wiki/Alan_Perlis" title="Alan Perlis">Alan Perlis</a></li> <li><a href="/wiki/Heinz_Rutishauser" title="Heinz Rutishauser">Heinz Rutishauser</a></li> <li><a href="/wiki/Klaus_Samelson" title="Klaus Samelson">Klaus Samelson</a></li> <li><a href="/wiki/Joseph_Henry_Wegstein" title="Joseph Henry Wegstein">Joseph Henry Wegstein</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/MAD_(programming_language)" title="MAD (programming language)">MAD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bruce_Arden" title="Bruce Arden">Bruce Arden</a></li> <li><a href="/wiki/Bernard_Galler" title="Bernard Galler">Bernard Galler</a></li> <li><a href="/wiki/Robert_M._Graham_(computer_scientist)" title="Robert M. Graham (computer scientist)">Robert M. Graham</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ALGOL_60" title="ALGOL 60">ALGOL 60</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Backus^</li> <li><a href="/wiki/Roland_Carl_Backhouse" title="Roland Carl Backhouse">Roland Carl Backhouse</a></li> <li>Bauer^</li> <li><a href="/wiki/Richard_Bird_(computer_scientist)" title="Richard Bird (computer scientist)">Richard Bird</a></li> <li><a href="/wiki/Stephen_R._Bourne" title="Stephen R. Bourne">Stephen R. Bourne</a></li> <li><a href="/wiki/Edsger_W._Dijkstra" title="Edsger W. Dijkstra">Edsger W. Dijkstra</a></li> <li><a href="/wiki/Andrey_Ershov" class="mw-redirect" title="Andrey Ershov">Andrey Ershov</a></li> <li><a href="/wiki/Robert_W._Floyd" title="Robert W. Floyd">Robert W. Floyd</a></li> <li><a href="/wiki/Jeremy_Gibbons" title="Jeremy Gibbons">Jeremy Gibbons</a></li> <li>Julien Green</li> <li><a href="/wiki/David_Gries" title="David Gries">David Gries</a></li> <li><a href="/wiki/Eric_Hehner" title="Eric Hehner">Eric Hehner</a></li> <li><a href="/wiki/Tony_Hoare" title="Tony Hoare">Tony Hoare</a></li> <li><a href="/wiki/J%C3%B8rn_Jensen" title="Jørn Jensen">Jørn Jensen</a></li> <li>Katz^</li> <li><a href="/wiki/Peter_Landin" title="Peter Landin">Peter Landin</a></li> <li><a href="/wiki/Tom_Maibaum" title="Tom Maibaum">Tom Maibaum</a></li> <li><a href="/wiki/Conor_McBride" title="Conor McBride">Conor McBride</a></li> <li><a href="/wiki/John_McCarthy_(computer_scientist)" title="John McCarthy (computer scientist)">John McCarthy</a></li> <li><a href="/wiki/Carroll_Morgan_(computer_scientist)" title="Carroll Morgan (computer scientist)">Carroll Morgan</a></li> <li><a href="/wiki/Peter_Naur" title="Peter Naur">Peter Naur</a></li> <li><a href="/wiki/Maurice_Nivat" title="Maurice Nivat">Maurice Nivat</a></li> <li><a href="/wiki/John_E._L._Peck" title="John E. L. Peck">John E. L. Peck</a></li> <li>Perlis^</li> <li><a href="/wiki/Brian_Randell" title="Brian Randell">Brian Randell</a></li> <li>Rutishauser^</li> <li>Samelson^</li> <li><a href="/wiki/Jacob_T._Schwartz" title="Jacob T. Schwartz">Jacob T. Schwartz</a></li> <li><a href="/wiki/Micha_Sharir" title="Micha Sharir">Micha Sharir</a></li> <li><a href="/wiki/David_Turner_(computer_scientist)" title="David Turner (computer scientist)">David Turner</a></li> <li><a href="/wiki/Bernard_Vauquois" title="Bernard Vauquois">Bernard Vauquois</a></li> <li><a href="/wiki/Eiiti_Wada" title="Eiiti Wada">Eiiti Wada</a></li> <li>Wegstein^</li> <li><a href="/wiki/Adriaan_van_Wijngaarden" title="Adriaan van Wijngaarden">Adriaan van Wijngaarden</a></li> <li><a href="/wiki/Mike_Woodger" title="Mike Woodger">Mike Woodger</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Simula" title="Simula">Simula</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Ole-Johan Dahl</a></li> <li><a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Kristen Nygaard</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/ALGOL_68" title="ALGOL 68">ALGOL 68</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Bauer^</li> <li><a href="/wiki/Susan_G._Bond" title="Susan G. Bond">Susan G. Bond</a></li> <li>Bourne^</li> <li><a href="/wiki/Robert_Dewar" title="Robert Dewar">Robert Dewar</a></li> <li>Dijkstra^</li> <li><a href="https://de.wikipedia.org/wiki/Gerhard_Goos" class="extiw" title="de:Gerhard Goos">Gerhard Goos</a></li> <li><a href="/wiki/Michael_Guy" title="Michael Guy">Michael Guy</a></li> <li>Hoare^</li> <li><a href="/wiki/Cornelis_H._A._Koster" title="Cornelis H. A. Koster">Cornelis H. A. Koster</a></li> <li><a href="/wiki/Peter_Landin" title="Peter Landin">Peter Landin</a></li> <li><a href="/wiki/Charles_H._Lindsey" title="Charles H. Lindsey">Charles H. Lindsey</a></li> <li><a href="/wiki/Barry_J._Mailloux" title="Barry J. Mailloux">Barry J. Mailloux</a></li> <li>McCarthy^</li> <li><a href="/wiki/Lambert_Meertens" title="Lambert Meertens">Lambert Meertens</a></li> <li>Naur^</li> <li>Peck^</li> <li><a href="/wiki/Willem_van_der_Poel" title="Willem van der Poel">Willem van der Poel</a></li> <li>Randell^</li> <li><a href="/wiki/Douglas_T._Ross" title="Douglas T. Ross">Douglas T. Ross</a></li> <li>Samelson^</li> <li><a href="/wiki/Michel_Sintzoff" title="Michel Sintzoff">Michel Sintzoff</a></li> <li>van Wijngaarden^</li> <li><a href="/wiki/Niklaus_Wirth" title="Niklaus Wirth">Niklaus Wirth</a></li> <li>Woodger^</li> <li><a href="/wiki/Philip_Woodward" title="Philip Woodward">Philip Woodward</a></li> <li><a href="/wiki/Nobuo_Yoneda" title="Nobuo Yoneda">Nobuo Yoneda</a></li></ul> </div></td></tr></tbody></table><div> <ul><li><a href="/wiki/Hal_Abelson" title="Hal Abelson">Hal Abelson</a></li> <li><a href="/wiki/John_Barnes_(computer_scientist)" title="John Barnes (computer scientist)">John Barnes</a></li> <li><a href="/wiki/Tony_Brooker" title="Tony Brooker">Tony Brooker</a></li> <li><a href="/wiki/Ron_Morrison" title="Ron Morrison">Ron Morrison</a></li> <li><a href="/wiki/Peter_O%27Hearn" title="Peter O'Hearn">Peter O'Hearn</a></li> <li><a href="/wiki/John_C._Reynolds" title="John C. Reynolds">John C. Reynolds</a></li></ul></div></td></tr></tbody></table><div> <ul><li><a href="/wiki/ALGOL_Bulletin" title="ALGOL Bulletin">ALGOL Bulletin</a></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Comparison</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <li><a href="/wiki/ALGOL_58#ALGOL_58's_influence_on_ALGOL_60" title="ALGOL 58">ALGOL 58 influence on ALGOL 60</a></li> <li><a href="/wiki/ALGOL_68#Comparisons_with_other_languages" title="ALGOL 68">ALGOL 68 to other languages</a></li> <li><a href="/wiki/Comparison_of_ALGOL_68_and_C%2B%2B" title="Comparison of ALGOL 68 and C++">ALGOL 68 to C++</a></li> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><b>^ = full name and link in prior ALGOL version above</b><br /><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Category:Algol_programming_language_family" title="Category:Algol programming language family">Category: ALGOL</a></b> <span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <b><a href="/wiki/Category:ALGOL_60" title="Category:ALGOL 60">Category: ALGOL 60</a></b></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="University_of_Oslo" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2" style="background:#ffffff;color: #000000;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:University_of_Oslo" title="Template:University of Oslo"><abbr title="View this template" style="color: #000000">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:University_of_Oslo" title="Template talk:University of Oslo"><abbr title="Discuss this template" style="color: #000000">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:University_of_Oslo" title="Special:EditPage/Template:University of Oslo"><abbr title="Edit this template" style="color: #000000">e</abbr></a></li></ul></div><div id="University_of_Oslo" style="font-size:114%;margin:0 4em"><a href="/wiki/University_of_Oslo" title="University of Oslo">University of Oslo</a></div></th></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">History</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1943_University_of_Oslo_fire" title="1943 University of Oslo fire">1943 fire</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Campuses</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Blindern" title="Blindern">Blindern</a></li> <li><a href="/wiki/University_of_Oslo_Faculty_of_Law" title="University of Oslo Faculty of Law">Downtown</a> <ul><li><a href="/wiki/Universitetsplassen" title="Universitetsplassen">Universitetsplassen</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Faculties</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/University_of_Oslo_Faculty_of_Law" title="University of Oslo Faculty of Law">Law</a></li> <li><a href="/wiki/University_of_Oslo_Faculty_of_Medicine" title="University of Oslo Faculty of Medicine">Medicine</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Institutes and centers</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Norwegian_Institute_at_Athens" title="Norwegian Institute at Athens">Athens</a></li> <li><a href="/wiki/Centre_for_Ibsen_Studies" title="Centre for Ibsen Studies">Ibsen Studies</a></li> <li><a href="/wiki/Institute_of_Clinical_Dentistry_(Oslo)" title="Institute of Clinical Dentistry (Oslo)">Clinical Dentistry</a></li> <li><a href="/wiki/Norwegian_Research_Center_for_Computers_and_Law" title="Norwegian Research Center for Computers and Law">Computers and Law</a></li> <li><a href="/wiki/Centre_for_Development_and_the_Environment" title="Centre for Development and the Environment">Development and the Environment</a></li> <li><a href="/wiki/Nordic_Gender_Institute" title="Nordic Gender Institute">Gender</a></li> <li><a href="/wiki/Norwegian_Centre_for_Human_Rights" title="Norwegian Centre for Human Rights">Human Rights</a></li> <li><a href="/wiki/Norwegian_Internet_Exchange" title="Norwegian Internet Exchange">Internet Exchange</a></li> <li><a href="/wiki/Department_of_Psychology,_University_of_Oslo" title="Department of Psychology, University of Oslo">Psychology</a></li> <li><a href="/wiki/Department_of_Sociology_and_Human_Geography,_University_of_Oslo" title="Department of Sociology and Human Geography, University of Oslo">Sociology and Human Geography</a></li> <li><a href="/wiki/University_Library_of_Oslo" class="mw-redirect" title="University Library of Oslo">University Library</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Museums</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Museum_of_Cultural_History,_Oslo" title="Museum of Cultural History, Oslo">Museum of Cultural History</a> <ul><li><a href="/wiki/Viking_Ship_Museum_(Oslo)" title="Viking Ship Museum (Oslo)">Viking Ship Museum</a></li></ul></li> <li><a href="/wiki/Natural_History_Museum_at_the_University_of_Oslo" title="Natural History Museum at the University of Oslo">Natural History Museum</a> <ul><li><a href="/wiki/University_Botanical_Garden_(Oslo)" title="University Botanical Garden (Oslo)">Botanical Garden</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Hospitals</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Oslo_University_Hospital" title="Oslo University Hospital">Oslo</a> <ul><li><a href="/wiki/Oslo_University_Hospital,_Aker" title="Oslo University Hospital, Aker">Aker</a></li> <li><a href="/wiki/Oslo_University_Hospital,_Radiumhospitalet" title="Oslo University Hospital, Radiumhospitalet"> Radiumhospitalet</a></li> <li><a href="/wiki/Oslo_University_Hospital,_Rikshospitalet" title="Oslo University Hospital, Rikshospitalet">Rikshospitalet</a></li> <li><a href="/wiki/Oslo_University_Hospital,_Ullev%C3%A5l" title="Oslo University Hospital, Ullevål">Ullevål</a></li></ul></li> <li><a href="/wiki/Akershus_University_Hospital" title="Akershus University Hospital">Akershus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%"><a href="/wiki/University_of_Oslo#Affiliated_institutes" title="University of Oslo">Affiliated institutes</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Norwegian_Centre_for_Violence_and_Traumatic_Stress_Studies" title="Norwegian Centre for Violence and Traumatic Stress Studies">Violence and Traumatic Stress Studies</a></li> <li><a href="/wiki/Center_for_Studies_of_the_Holocaust_and_Religious_Minorities" title="Center for Studies of the Holocaust and Religious Minorities">Studies of the Holocaust and Religious Minorities</a></li> <li><a href="/wiki/Centre_for_International_Climate_and_Environmental_Research" title="Centre for International Climate and Environmental Research">International Climate and Environmental Research</a></li> <li><a href="/w/index.php?title=Frisch_Centre&action=edit&redlink=1" class="new" title="Frisch Centre (page does not exist)">Frisch Centre</a></li> <li><a href="/wiki/Simula_Research_Laboratory" title="Simula Research Laboratory">Simula Research Laboratory</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Journals</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Apollon_(Norwegian_magazine)" title="Apollon (Norwegian magazine)">Apollon</a></i></li> <li><i><a href="/wiki/Ibsen_Studies" title="Ibsen Studies">Ibsen Studies</a></i></li> <li><i><a href="/wiki/Nordic_Journal_of_Human_Rights" title="Nordic Journal of Human Rights">Nordic Journal of Human Rights</a></i></li> <li><i><a href="/w/index.php?title=Nordic_Journal_of_Philosophical_Logic&action=edit&redlink=1" class="new" title="Nordic Journal of Philosophical Logic (page does not exist)">Nordic Journal of Philosophical Logic</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="background:#ffffff;color: #000000;;width:1%">Student life</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chateau_Neuf" title="Chateau Neuf">Chateau Neuf</a></li> <li><a href="/wiki/Foundation_for_Student_Life_in_Oslo" class="mw-redirect" title="Foundation for Student Life in Oslo">Foundation for Student Life</a></li> <li><a href="/wiki/Norwegian_Students%27_Society" title="Norwegian Students' Society">Students' Society</a></li> <li><a href="/wiki/Universitas_(newspaper)" title="Universitas (newspaper)"><i>Universitas</i></a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Software_engineering" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Software_engineering" title="Template:Software engineering"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Software_engineering" title="Template talk:Software engineering"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Software_engineering" title="Special:EditPage/Template:Software engineering"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Software_engineering" style="font-size:114%;margin:0 4em"><a href="/wiki/Software_engineering" title="Software engineering">Software engineering</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Fields</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Computer_programming" title="Computer programming">Computer programming</a></li> <li><a href="/wiki/DevOps" title="DevOps">DevOps</a></li> <li><a href="/wiki/Empirical_software_engineering" title="Empirical software engineering">Empirical software engineering</a></li> <li><a href="/wiki/Experimental_software_engineering" title="Experimental software engineering">Experimental software engineering</a></li> <li><a href="/wiki/Formal_methods" title="Formal methods">Formal methods</a></li> <li><a href="/wiki/Requirements_engineering" title="Requirements engineering">Requirements engineering</a></li> <li><a href="/wiki/Search-based_software_engineering" title="Search-based software engineering">Search-based software engineering</a></li> <li><a href="/wiki/Site_reliability_engineering" title="Site reliability engineering">Site reliability engineering</a></li> <li><a href="/wiki/Social_software_engineering" title="Social software engineering">Social software engineering</a></li> <li><a href="/wiki/Software_deployment" title="Software deployment">Software deployment</a></li> <li><a href="/wiki/Software_design" title="Software design">Software design</a></li> <li><a href="/wiki/Software_maintenance" title="Software maintenance">Software maintenance</a></li> <li><a href="/wiki/Software_testing" title="Software testing">Software testing</a></li> <li><a href="/wiki/Systems_analysis" title="Systems analysis">Systems analysis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Concepts</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Abstraction_(computer_science)" title="Abstraction (computer science)">Abstraction</a></li> <li><a href="/wiki/Component-based_software_engineering" title="Component-based software engineering">Component-based software engineering</a></li> <li><a href="/wiki/Computer_compatibility" title="Computer compatibility">Software compatibility</a> <ul><li><a href="/wiki/Backward_compatibility" title="Backward compatibility">Backward compatibility</a></li> <li><a href="/wiki/Compatibility_layer" title="Compatibility layer">Compatibility layer</a></li> <li><a href="/wiki/Compatibility_mode" title="Compatibility mode">Compatibility mode</a></li> <li><a href="/wiki/Forward_compatibility" title="Forward compatibility">Forward compatibility</a></li> <li><a href="/wiki/Software_incompatibility" title="Software incompatibility">Software incompatibility</a></li></ul></li> <li><a href="/wiki/Data_modeling" title="Data modeling">Data modeling</a></li> <li><a href="/wiki/Enterprise_architecture" title="Enterprise architecture">Enterprise architecture</a></li> <li><a href="/wiki/Functional_specification" title="Functional specification">Functional specification</a></li> <li><a href="/wiki/Modeling_language" title="Modeling language">Modeling language</a></li> <li><a href="/wiki/Programming_paradigm" title="Programming paradigm">Programming paradigm</a></li> <li><a href="/wiki/Software" title="Software">Software</a></li> <li><a href="/wiki/Software_archaeology" title="Software archaeology">Software archaeology</a></li> <li><a href="/wiki/Software_architecture" title="Software architecture">Software architecture</a></li> <li><a href="/wiki/Software_configuration_management" title="Software configuration management">Software configuration management</a></li> <li><a href="/wiki/Software_development_process" title="Software development process">Software development process/methodology</a></li> <li><a href="/wiki/Software_quality" title="Software quality">Software quality</a></li> <li><a href="/wiki/Software_quality_assurance" title="Software quality assurance">Software quality assurance</a></li> <li><a href="/wiki/Software_verification_and_validation" title="Software verification and validation">Software verification and validation</a></li> <li><a href="/wiki/Software_system" title="Software system">Software system</a></li> <li><a href="/wiki/Structured_analysis" title="Structured analysis">Structured analysis</a> <ul><li><a href="/wiki/Essential_systems_analysis" title="Essential systems analysis">Essential analysis</a></li></ul></li> <li><a href="/wiki/CI/CD" title="CI/CD">CI/CD</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Orientations</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Agile_software_development" title="Agile software development">Agile</a></li> <li><a href="/wiki/Aspect-oriented_programming" title="Aspect-oriented programming">Aspect-oriented</a></li> <li><a href="/wiki/Object-oriented_programming" title="Object-oriented programming">Object orientation</a></li> <li><a href="/wiki/Ontology_(information_science)" title="Ontology (information science)">Ontology</a></li> <li><a href="/wiki/Service-oriented_architecture" title="Service-oriented architecture">Service orientation</a></li> <li><a href="/wiki/Systems_development_life_cycle" title="Systems development life cycle">SDLC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Models</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Developmental</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Agile_software_development" title="Agile software development">Agile</a></li> <li><a href="/wiki/Enterprise_unified_process" title="Enterprise unified process">EUP</a></li> <li><a href="/wiki/Executable_UML" title="Executable UML">Executable UML</a></li> <li><a href="/wiki/Incremental_build_model" title="Incremental build model">Incremental model</a></li> <li><a href="/wiki/Iterative_and_incremental_development" title="Iterative and incremental development">Iterative model</a></li> <li><a href="/wiki/Software_prototyping" title="Software prototyping">Prototype model</a></li> <li><a href="/wiki/Rapid_application_development" title="Rapid application development">RAD</a></li> <li><a href="/wiki/Unified_Process" class="mw-redirect" title="Unified Process">UP</a></li> <li><a href="/wiki/Scrum_(software_development)" title="Scrum (software development)">Scrum</a></li> <li><a href="/wiki/Spiral_model" title="Spiral model">Spiral model</a></li> <li><a href="/wiki/V-model_(software_development)" title="V-model (software development)">V-model</a></li> <li><a href="/wiki/Waterfall_model" title="Waterfall model">Waterfall model</a></li> <li><a href="/wiki/Extreme_programming" title="Extreme programming">XP</a></li> <li><a href="/wiki/Model-driven_engineering" title="Model-driven engineering">Model-driven engineering</a></li> <li><a href="/wiki/Round-trip_engineering" title="Round-trip engineering">Round-trip engineering</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ISO/IEC_15504" title="ISO/IEC 15504">SPICE</a></li> <li><a href="/wiki/Capability_Maturity_Model_Integration" title="Capability Maturity Model Integration">CMMI</a></li> <li><a href="/wiki/Data_model" title="Data model">Data model</a></li> <li><a href="/wiki/Entity%E2%80%93relationship_model" title="Entity–relationship model">ER model</a></li> <li><a href="/wiki/Function_model" title="Function model">Function model</a></li> <li><a href="/wiki/Information_model" title="Information model">Information model</a></li> <li><a href="/wiki/Metamodeling" title="Metamodeling">Metamodeling</a></li> <li><a href="/wiki/Object_model" title="Object model">Object model</a></li> <li><a href="/wiki/Systems_modeling" title="Systems modeling">Systems model</a></li> <li><a href="/wiki/View_model" title="View model">View model</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;font-weight:normal;">Languages</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/IDEF" title="IDEF">IDEF</a></li> <li><a href="/wiki/Unified_Modeling_Language" title="Unified Modeling Language">UML</a></li> <li><a href="/wiki/Universal_Systems_Language" title="Universal Systems Language">USL</a></li> <li><a href="/wiki/Systems_modeling_language" title="Systems modeling language">SysML</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related fields</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Computer_science" title="Computer science">Computer science</a></li> <li><a href="/wiki/Computer_engineering" title="Computer engineering">Computer engineering</a></li> <li><a href="/wiki/Information_science" title="Information science">Information science</a></li> <li><a href="/wiki/Project_management" title="Project management">Project management</a></li> <li><a href="/wiki/Risk_management" title="Risk management">Risk management</a></li> <li><a href="/wiki/Systems_engineering" title="Systems engineering">Systems engineering</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="font-weight:bold;"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <a href="https://commons.wikimedia.org/wiki/Category:Software_engineering" class="extiw" title="commons:Category:Software engineering">Commons</a></li> <li><span class="noviewer" typeof="mw:File"><span title="Category"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> <a href="/wiki/Category:Software_engineering" title="Category:Software engineering">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="A._M._Turing_Award_laureates" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Turing_Award_laureates" title="Template:Turing Award laureates"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Turing_Award_laureates" title="Template talk:Turing Award laureates"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Turing_Award_laureates" title="Special:EditPage/Template:Turing Award laureates"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="A._M._Turing_Award_laureates" style="font-size:114%;margin:0 4em"><a href="/wiki/Turing_Award" title="Turing Award">A. M. Turing Award</a> <a href="/wiki/Laureate" title="Laureate">laureates</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><span class="nowrap"><a href="/wiki/Alan_Perlis" title="Alan Perlis">Alan Perlis</a> (1966)</span></li> <li><span class="nowrap"><a href="/wiki/Maurice_Wilkes" title="Maurice Wilkes">Maurice Vincent Wilkes</a> (1967)</span></li> <li><span class="nowrap"><a href="/wiki/Richard_Hamming" title="Richard Hamming">Richard Hamming</a> (1968)</span></li> <li><span class="nowrap"><a href="/wiki/Marvin_Minsky" title="Marvin Minsky">Marvin Minsky</a> (1969)</span></li> <li><span class="nowrap"><a href="/wiki/James_H._Wilkinson" title="James H. Wilkinson">James H. Wilkinson</a> (1970)</span></li> <li><span class="nowrap"><a href="/wiki/John_McCarthy_(computer_scientist)" title="John McCarthy (computer scientist)">John McCarthy</a> (1971)</span></li> <li><span class="nowrap"><a href="/wiki/Edsger_W._Dijkstra" title="Edsger W. Dijkstra">Edsger W. Dijkstra</a> (1972)</span></li> <li><span class="nowrap"><a href="/wiki/Charles_Bachman" title="Charles Bachman">Charles Bachman</a> (1973)</span></li> <li><span class="nowrap"><a href="/wiki/Donald_Knuth" title="Donald Knuth">Donald Knuth</a> (1974)</span></li> <li><span class="nowrap"><a href="/wiki/Allen_Newell" title="Allen Newell">Allen Newell</a>; <a href="/wiki/Herbert_A._Simon" title="Herbert A. Simon">Herbert A. Simon</a> (1975)</span></li> <li><span class="nowrap"><a href="/wiki/Michael_O._Rabin" title="Michael O. Rabin">Michael O. Rabin</a>; <a href="/wiki/Dana_Scott" title="Dana Scott">Dana Scott</a> (1976)</span></li> <li><span class="nowrap"><a href="/wiki/John_Backus" title="John Backus">John Backus</a> (1977)</span></li> <li><span class="nowrap"><a href="/wiki/Robert_W._Floyd" title="Robert W. Floyd">Robert W. Floyd</a> (1978)</span></li> <li><span class="nowrap"><a href="/wiki/Kenneth_E._Iverson" title="Kenneth E. Iverson">Kenneth E. Iverson</a> (1979)</span></li> <li><span class="nowrap"><a href="/wiki/Tony_Hoare" title="Tony Hoare">Tony Hoare</a> (1980)</span></li> <li><span class="nowrap"><a href="/wiki/Edgar_F._Codd" title="Edgar F. Codd">Edgar F. Codd</a> (1981)</span></li> <li><span class="nowrap"><a href="/wiki/Stephen_Cook" title="Stephen Cook">Stephen Cook</a> (1982)</span></li> <li><span class="nowrap"><a href="/wiki/Ken_Thompson" title="Ken Thompson">Ken Thompson</a>; <a href="/wiki/Dennis_Ritchie" title="Dennis Ritchie">Dennis Ritchie</a> (1983)</span></li> <li><span class="nowrap"><a href="/wiki/Niklaus_Wirth" title="Niklaus Wirth">Niklaus Wirth</a> (1984)</span></li> <li><span class="nowrap"><a href="/wiki/Richard_M._Karp" title="Richard M. Karp">Richard Karp</a> (1985)</span></li> <li><span class="nowrap"><a href="/wiki/John_Hopcroft" title="John Hopcroft">John Hopcroft</a>; <a href="/wiki/Robert_Tarjan" title="Robert Tarjan">Robert Tarjan</a> (1986)</span></li> <li><span class="nowrap"><a href="/wiki/John_Cocke_(computer_scientist)" title="John Cocke (computer scientist)">John Cocke</a> (1987)</span></li> <li><span class="nowrap"><a href="/wiki/Ivan_Sutherland" title="Ivan Sutherland">Ivan Sutherland</a> (1988)</span></li> <li><span class="nowrap"><a href="/wiki/William_Kahan" title="William Kahan">William Kahan</a> (1989)</span></li> <li><span class="nowrap"><a href="/wiki/Fernando_J._Corbat%C3%B3" title="Fernando J. Corbató">Fernando J. Corbató</a> (1990)</span></li> <li><span class="nowrap"><a href="/wiki/Robin_Milner" title="Robin Milner">Robin Milner</a> (1991)</span></li> <li><span class="nowrap"><a href="/wiki/Butler_Lampson" title="Butler Lampson">Butler Lampson</a> (1992)</span></li> <li><span class="nowrap"><a href="/wiki/Juris_Hartmanis" title="Juris Hartmanis">Juris Hartmanis</a>; <a href="/wiki/Richard_E._Stearns" title="Richard E. Stearns">Richard E. Stearns</a> (1993)</span></li> <li><span class="nowrap"><a href="/wiki/Edward_Feigenbaum" title="Edward Feigenbaum">Edward Feigenbaum</a>; <a href="/wiki/Raj_Reddy" title="Raj Reddy">Raj Reddy</a> (1994)</span></li> <li><span class="nowrap"><a href="/wiki/Manuel_Blum" title="Manuel Blum">Manuel Blum</a> (1995)</span></li> <li><span class="nowrap"><a href="/wiki/Amir_Pnueli" title="Amir Pnueli">Amir Pnueli</a> (1996)</span></li> <li><span class="nowrap"><a href="/wiki/Douglas_Engelbart" title="Douglas Engelbart">Douglas Engelbart</a> (1997)</span></li> <li><span class="nowrap"><a href="/wiki/Jim_Gray_(computer_scientist)" title="Jim Gray (computer scientist)">Jim Gray</a> (1998)</span></li> <li><span class="nowrap"><a href="/wiki/Fred_Brooks" title="Fred Brooks">Fred Brooks</a> (1999)</span></li> <li><span class="nowrap"><a href="/wiki/Andrew_Yao" title="Andrew Yao">Andrew Yao</a> (2000)</span></li> <li><span class="nowrap"><a class="mw-selflink selflink">Ole-Johan Dahl</a>; <a href="/wiki/Kristen_Nygaard" title="Kristen Nygaard">Kristen Nygaard</a> (2001)</span></li> <li><span class="nowrap"><a href="/wiki/Ron_Rivest" title="Ron Rivest">Ron Rivest</a>; <a href="/wiki/Adi_Shamir" title="Adi Shamir">Adi Shamir</a>; <a href="/wiki/Leonard_Adleman" title="Leonard Adleman">Leonard Adleman</a> (2002)</span></li> <li><span class="nowrap"><a href="/wiki/Alan_Kay" title="Alan Kay">Alan Kay</a> (2003)</span></li> <li><span class="nowrap"><a href="/wiki/Vint_Cerf" title="Vint Cerf">Vint Cerf</a>; <a href="/wiki/Robert_Kahn_(computer_scientist)" title="Robert Kahn (computer scientist)">Bob Kahn</a> (2004)</span></li> <li><span class="nowrap"><a href="/wiki/Peter_Naur" title="Peter Naur">Peter Naur</a> (2005)</span></li> <li><span class="nowrap"><a href="/wiki/Frances_Allen" title="Frances Allen">Frances Allen</a> (2006)</span></li> <li><span class="nowrap"><a href="/wiki/Edmund_M._Clarke" title="Edmund M. Clarke">Edmund M. Clarke</a>; <a href="/wiki/E._Allen_Emerson" title="E. Allen Emerson">E. Allen Emerson</a>; <a href="/wiki/Joseph_Sifakis" title="Joseph Sifakis">Joseph Sifakis</a> (2007)</span></li> <li><span class="nowrap"><a href="/wiki/Barbara_Liskov" title="Barbara Liskov">Barbara Liskov</a> (2008)</span></li> <li><span class="nowrap"><a href="/wiki/Charles_P._Thacker" title="Charles P. Thacker">Charles P. Thacker</a> (2009)</span></li> <li><span class="nowrap"><a href="/wiki/Leslie_Valiant" title="Leslie Valiant">Leslie G. Valiant</a> (2010)</span></li> <li><span class="nowrap"><a href="/wiki/Judea_Pearl" title="Judea Pearl">Judea Pearl</a> (2011)</span></li> <li><span class="nowrap"><a href="/wiki/Shafi_Goldwasser" title="Shafi Goldwasser">Shafi Goldwasser</a>; <a href="/wiki/Silvio_Micali" title="Silvio Micali">Silvio Micali</a> (2012)</span></li> <li><span class="nowrap"><a href="/wiki/Leslie_Lamport" title="Leslie Lamport">Leslie Lamport</a> (2013)</span></li> <li><span class="nowrap"><a href="/wiki/Michael_Stonebraker" title="Michael Stonebraker">Michael Stonebraker</a> (2014)</span></li> <li><span class="nowrap"><a href="/wiki/Martin_Hellman" title="Martin Hellman">Martin Hellman</a>; <a href="/wiki/Whitfield_Diffie" title="Whitfield Diffie">Whitfield Diffie</a> (2015)</span></li> <li><span class="nowrap"><a href="/wiki/Tim_Berners-Lee" title="Tim Berners-Lee">Tim Berners-Lee</a> (2016)</span></li> <li><span class="nowrap"><a href="/wiki/John_L._Hennessy" title="John L. Hennessy">John L. Hennessy</a>; <a href="/wiki/David_Patterson_(computer_scientist)" title="David Patterson (computer scientist)">David Patterson</a> (2017)</span></li> <li><span class="nowrap"><a href="/wiki/Yoshua_Bengio" title="Yoshua Bengio">Yoshua Bengio</a>; <a href="/wiki/Geoffrey_Hinton" title="Geoffrey Hinton">Geoffrey Hinton</a>; <a href="/wiki/Yann_LeCun" title="Yann LeCun">Yann LeCun</a> (2018)</span></li> <li><span class="nowrap"><a href="/wiki/Edwin_Catmull" title="Edwin Catmull">Ed Catmull</a>; <a href="/wiki/Pat_Hanrahan" title="Pat Hanrahan">Pat Hanrahan</a> (2019)</span></li> <li><span class="nowrap"><a href="/wiki/Alfred_Aho" title="Alfred Aho">Alfred Aho</a>; <a href="/wiki/Jeffrey_Ullman" title="Jeffrey Ullman">Jeffrey Ullman</a> (2020) </span></li> <li><span class="nowrap"><a href="/wiki/Jack_Dongarra" title="Jack Dongarra">Jack Dongarra</a> (2021)</span></li> <li><span class="nowrap"><a href="/wiki/Robert_Metcalfe" title="Robert Metcalfe">Robert Metcalfe</a> (2022)</span></li> <li><span class="nowrap"><a href="/wiki/Avi_Wigderson" title="Avi Wigderson">Avi Wigderson</a> (2023)</span></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-labelledby="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q92745#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div 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style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/128965967">Germany</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/n50041578">United States</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.ndl.go.jp/auth/ndlna/00437110">Japan</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=xx0048137&CON_LNG=ENG">Czech Republic</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="http://data.bibliotheken.nl/id/thes/p067991505">Netherlands</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://authority.bibsys.no/authority/rest/authorities/html/90268340">Norway</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://kopkatalogs.lv/F?func=direct&local_base=lnc10&doc_number=000133105&P_CON_LNG=ENG">Latvia</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://libris.kb.se/xv8bb7wg26gltf7">Sweden</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.nli.org.il/en/authorities/987007429319005171">Israel</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://opac.kbr.be/LIBRARY/doc/AUTHORITY/14425804">Belgium</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Academics</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://ci.nii.ac.jp/author/DA03386560?l=en">CiNii</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://dl.acm.org/profile/81452606808">Association for Computing Machinery</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.scopus.com/authid/detail.uri?authorId=16512366700">Scopus</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://zbmath.org/authors/?q=ai:dahl.ole-johan">zbMATH</a></span></li><li><span class="uid"><a rel="nofollow" class="external text" href="https://dblp.org/pid/d/OleJohanDahl">DBLP</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://trove.nla.gov.au/people/805607">Trove</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://www.idref.fr/059573791">IdRef</a></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Ole-Johan_Dahl&oldid=1244028799">https://en.wikipedia.org/w/index.php?title=Ole-Johan_Dahl&oldid=1244028799</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:1931_births" title="Category:1931 births">1931 births</a></li><li><a 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