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</li> <li id="toc-Senyals_de_dades_i_control" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Senyals_de_dades_i_control"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Senyals de dades i control</span> </div> </a> <ul id="toc-Senyals_de_dades_i_control-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Eines_pel_desenvolupament" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Eines_pel_desenvolupament"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Eines pel desenvolupament</span> </div> </a> <ul id="toc-Eines_pel_desenvolupament-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vegeu_també" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vegeu_també"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Vegeu també</span> </div> </a> <ul id="toc-Vegeu_també-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contingut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Taula de continguts" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Commuta la taula de continguts." > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Commuta la taula de continguts.</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">RS-232</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vés a un article en una altra llengua. Disponible en 34 llengües" > <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-34" 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">34 llengües</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%A2%D8%B1_%D8%A5%D8%B3_232" title="آر إس 232 - àrab" lang="ar" hreflang="ar" data-title="آر إس 232" data-language-autonym="العربية" data-language-local-name="àrab" 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/RS-232" title="RS-232 - azerbaidjanès" lang="az" hreflang="az" data-title="RS-232" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjanès" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/RS-232" title="RS-232 - belarús" lang="be" hreflang="be" data-title="RS-232" data-language-autonym="Беларуская" data-language-local-name="belarús" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/RS-232" title="RS-232 - txec" lang="cs" hreflang="cs" data-title="RS-232" data-language-autonym="Čeština" data-language-local-name="txec" 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/RS-232" title="RS-232 - danès" lang="da" hreflang="da" data-title="RS-232" data-language-autonym="Dansk" data-language-local-name="danès" 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/RS-232" title="RS-232 - alemany" lang="de" hreflang="de" data-title="RS-232" data-language-autonym="Deutsch" data-language-local-name="alemany" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/RS-232" title="RS-232 - grec" lang="el" hreflang="el" data-title="RS-232" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/RS-232" title="RS-232 - anglès" lang="en" hreflang="en" data-title="RS-232" data-language-autonym="English" data-language-local-name="anglès" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/RS-232" title="RS-232 - esperanto" lang="eo" hreflang="eo" data-title="RS-232" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/RS-232" title="RS-232 - espanyol" lang="es" hreflang="es" data-title="RS-232" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/RS-232" title="RS-232 - estonià" lang="et" hreflang="et" data-title="RS-232" data-language-autonym="Eesti" data-language-local-name="estonià" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/RS-232" title="RS-232 - basc" lang="eu" hreflang="eu" data-title="RS-232" data-language-autonym="Euskara" data-language-local-name="basc" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/RS-232" title="RS-232 - persa" lang="fa" hreflang="fa" data-title="RS-232" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/RS-232" title="RS-232 - finès" lang="fi" hreflang="fi" data-title="RS-232" data-language-autonym="Suomi" data-language-local-name="finès" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/RS-232" title="RS-232 - francès" lang="fr" hreflang="fr" data-title="RS-232" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/RS-232" title="RS-232 - hebreu" lang="he" hreflang="he" data-title="RS-232" data-language-autonym="עברית" data-language-local-name="hebreu" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/RS-232" title="RS-232 - croat" lang="hr" hreflang="hr" data-title="RS-232" data-language-autonym="Hrvatski" data-language-local-name="croat" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/RS-232" title="RS-232 - hongarès" lang="hu" hreflang="hu" data-title="RS-232" data-language-autonym="Magyar" data-language-local-name="hongarès" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/RS-232" title="RS-232 - indonesi" lang="id" hreflang="id" data-title="RS-232" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" 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/EIA_RS-232" title="EIA RS-232 - italià" lang="it" hreflang="it" data-title="EIA RS-232" data-language-autonym="Italiano" data-language-local-name="italià" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/RS-232" title="RS-232 - japonès" lang="ja" hreflang="ja" data-title="RS-232" data-language-autonym="日本語" data-language-local-name="japonès" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/RS-232" title="RS-232 - coreà" lang="ko" hreflang="ko" data-title="RS-232" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/RS-232" title="RS-232 - letó" lang="lv" hreflang="lv" data-title="RS-232" data-language-autonym="Latviešu" data-language-local-name="letó" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/RS-232" title="RS-232 - malai" lang="ms" hreflang="ms" data-title="RS-232" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/RS-232" title="RS-232 - neerlandès" lang="nl" hreflang="nl" data-title="RS-232" data-language-autonym="Nederlands" data-language-local-name="neerlandès" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/RS-232" title="RS-232 - noruec nynorsk" lang="nn" hreflang="nn" data-title="RS-232" data-language-autonym="Norsk nynorsk" data-language-local-name="noruec nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/RS-232" title="RS-232 - noruec bokmål" lang="nb" hreflang="nb" data-title="RS-232" data-language-autonym="Norsk bokmål" data-language-local-name="noruec bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/RS-232" title="RS-232 - polonès" lang="pl" hreflang="pl" data-title="RS-232" data-language-autonym="Polski" data-language-local-name="polonès" 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/RS-232" title="RS-232 - portuguès" lang="pt" hreflang="pt" data-title="RS-232" data-language-autonym="Português" data-language-local-name="portuguès" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/RS-232" title="RS-232 - rus" lang="ru" hreflang="ru" data-title="RS-232" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/RS-232" title="RS-232 - suec" lang="sv" hreflang="sv" data-title="RS-232" data-language-autonym="Svenska" data-language-local-name="suec" 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/RS-232" title="RS-232 - turc" lang="tr" hreflang="tr" data-title="RS-232" data-language-autonym="Türkçe" data-language-local-name="turc" 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/RS-232" title="RS-232 - ucraïnès" lang="uk" hreflang="uk" data-title="RS-232" data-language-autonym="Українська" data-language-local-name="ucraïnès" 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/RS-232" title="RS-232 - xinès" lang="zh" hreflang="zh" data-title="RS-232" data-language-autonym="中文" data-language-local-name="xinès" 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/Q191895#sitelinks-wikipedia" title="Modificau enllaços interlingües" class="wbc-editpage">Modifica els enllaços</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="Espais de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/RS-232" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:RS-232&action=edit&redlink=1" rel="discussion" class="new" title="Discussió sobre el contingut d'aquesta pàgina (encara no existeix) [t]" accesskey="t"><span>Discussió</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Canvia la variant de llengua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">català</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistes"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/RS-232"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=RS-232&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=RS-232&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Eines" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Eines</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Eines</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/RS-232"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=RS-232&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=RS-232&action=history"><span>Mostra l'historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:Enlla%C3%A7os/RS-232" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/RS-232" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=RS-232&oldid=34839069" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=RS-232&action=info" title="Més informació sobre aquesta pàgina"><span>Informació de la pàgina</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citau&page=RS-232&id=34839069&wpFormIdentifier=titleform" title="Informació sobre com citar aquesta pàgina"><span>Citau aquest article</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FRS-232"><span>Obtén una URL abreujada</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fca.wikipedia.org%2Fwiki%2FRS-232"><span>Descarrega el codi QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimeix/exporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Llibre&bookcmd=book_creator&referer=RS-232"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=RS-232&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=RS-232&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> En altres projectes </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:RS-232" hreflang="en"><span>Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q191895" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">De la Viquipèdia, l'enciclopèdia lliure</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><table class="vertical-navbox nowraplinks" style="float:right;clear:right;width:22.0em;margin:0 0 1.0em 1.0em;color:#202122;background-color:#f8f9fa;border:1px solid #a2a9b1;padding:0.2em;border-spacing:0.4em 0;text-align:center;line-height:1.4em;font-size:88%"><tbody><tr><th style="padding:0.2em 0.4em 0.2em;font-size:145%;line-height:1.2em"><a href="/wiki/TCP/IP" title="TCP/IP">Model TCP/IP</a><br /><span style="font-size:75%;">per <a href="/wiki/Capa_d%27abstracci%C3%B3_de_maquinari" title="Capa d'abstracció de maquinari">capes</a></span></th></tr><tr><td style="padding:0 0.1em 0.4em"> <div class="NavFrame collapsed" style="border:none;padding:0"><div class="NavHead" style="font-size:105%;text-align:left">5. <a href="/wiki/Capa_d%27aplicaci%C3%B3" title="Capa d'aplicació">Capa d'aplicació</a></div><div class="NavContent hlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center"> <ul><li><a href="/wiki/Protocol_de_transfer%C3%A8ncia_d%27hipertext" title="Protocol de transferència d'hipertext">HTTP</a></li> <li><a href="/wiki/Protocol_de_transfer%C3%A8ncia_de_fitxers" title="Protocol de transferència de fitxers">FTP</a></li> <li><a href="/wiki/Protocol_trivial_de_transfer%C3%A8ncia_de_fitxers" title="Protocol trivial de transferència de fitxers">TFTP</a></li> <li><a href="/wiki/Simple_Mail_Transfer_Protocol" title="Simple Mail Transfer Protocol">SMTP</a></li> <li><a href="/wiki/Post_Office_Protocol" title="Post Office Protocol">POP3</a></li> <li><a href="/wiki/Internet_Message_Access_Protocol" title="Internet Message Access Protocol">IMAP</a></li> <li><a href="/wiki/Domain_Name_System" title="Domain Name System">DNS</a></li> <li><a href="/wiki/IRC" title="IRC">IRC</a></li> <li><a href="/wiki/Secure_Shell" title="Secure Shell">SSH</a></li> <li><a href="/wiki/Telnet" title="Telnet">Telnet</a></li> <li><a href="/wiki/Transport_Layer_Security" title="Transport Layer Security">TLS i SSL</a></li> <li><a href="/wiki/Network_File_System" title="Network File System">NFS</a></li> <li><a href="/wiki/Network_News_Transport_Protocol" title="Network News Transport Protocol">NNTP</a></li> <li><a href="/wiki/Network_Time_Protocol" title="Network Time Protocol">NTP</a></li> <li><a href="/wiki/Server_Message_Block" class="mw-redirect" title="Server Message Block">SMB/CIFS</a></li> <li><a href="/wiki/Simple_Network_Management_Protocol" title="Simple Network Management Protocol">SNMP</a></li> <li><a href="/wiki/Gopher" title="Gopher">Gopher</a></li> <li><a href="/wiki/Real_Time_Protocol" title="Real Time Protocol">RTP</a></li> <li><a href="/wiki/Real_Time_Control_Protocol" title="Real Time Control Protocol">RTCP</a></li> <li><a href="/wiki/SOAP" title="SOAP">SOAP</a></li> <li><a href="/wiki/Protocol_d%27inici_de_sessi%C3%B3" title="Protocol d'inici de sessió">SIP</a></li> <li><a href="/wiki/Extensible_Messaging_and_Presence_Protocol" title="Extensible Messaging and Presence Protocol">XMPP</a></li></ul></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em"> <div class="NavFrame collapsed" style="border:none;padding:0"><div class="NavHead" style="font-size:105%;text-align:left">4. <a href="/wiki/Capa_de_transport" title="Capa de transport">Capa de transport</a></div><div class="NavContent hlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center"> <ul><li><a href="/wiki/Transmission_Control_Protocol" title="Transmission Control Protocol">TCP</a></li> <li><a href="/wiki/User_Datagram_Protocol" title="User Datagram Protocol">UDP</a></li> <li><a href="/wiki/Stream_Control_Transmission_Protocol" title="Stream Control Transmission Protocol">SCTP</a></li> <li><a href="/wiki/Sequenced_Packet_Exchange" title="Sequenced Packet Exchange">SPX</a></li> <li><a href="/wiki/NetBIOS" title="NetBIOS">NetBIOS</a></li></ul></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em"> <div class="NavFrame collapsed" style="border:none;padding:0"><div class="NavHead" style="font-size:105%;text-align:left">3. <a href="/wiki/Capa_de_xarxa" title="Capa de xarxa">Capa de xarxa</a></div><div class="NavContent hlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center"> <ul><li><a href="/wiki/Protocol_d%27Internet" title="Protocol d'Internet">IP</a> <ul><li><a href="/wiki/IPv4" class="mw-redirect" title="IPv4">IPv4</a></li> <li><a href="/wiki/IPv5" title="IPv5">IPv5</a></li> <li><a href="/wiki/IPv6" title="IPv6">IPv6</a></li></ul></li> <li><a href="/wiki/Internet_Control_Message_Protocol" title="Internet Control Message Protocol">ICMP</a></li> <li><a href="/wiki/IGMP" class="mw-redirect" title="IGMP">IGMP</a></li> <li><a href="/wiki/AppleTalk" title="AppleTalk">AppleTalk</a></li> <li><a href="/wiki/Internetwork_Packet_Exchange" title="Internetwork Packet Exchange">IPX</a></li> <li><a href="/wiki/NetBIOS" title="NetBIOS">NetBEUI</a></li> <li><a href="/wiki/X.25" title="X.25">X.25</a></li></ul></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em"> <div class="NavFrame collapsed" style="border:none;padding:0"><div class="NavHead" style="font-size:105%;text-align:left">2. <a href="/wiki/Capa_d%27enlla%C3%A7_de_dades" title="Capa d'enllaç de dades">Capa d'enllaç de dades</a></div><div class="NavContent hlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center"> <ul><li><a href="/wiki/Address_Resolution_Protocol" title="Address Resolution Protocol">ARP</a></li> <li><a href="/wiki/Protocol_invers_de_resoluci%C3%B3_d%27adreces" title="Protocol invers de resolució d'adreces">RARP</a></li> <li><a href="/wiki/Asynchronous_Transfer_Mode" title="Asynchronous Transfer Mode">ATM</a></li> <li><a href="/wiki/L%C3%ADnia_Digital_d%27Abonat" title="Línia Digital d'Abonat">DSL</a></li> <li><a href="/wiki/Ethernet" title="Ethernet">Ethernet</a></li> <li><a href="/wiki/Frame_Relay" title="Frame Relay">Frame Relay</a></li> <li><a href="/wiki/HDLC" title="HDLC">HDLC</a></li> <li><a href="/wiki/Neighbor_Discovery_Protocol" title="Neighbor Discovery Protocol">NDP</a></li> <li><a href="/wiki/Point-to-Point_Protocol" title="Point-to-Point Protocol">PPP</a></li> <li><a href="/wiki/SLIP" title="SLIP">SLIP</a></li> <li><a href="/wiki/Token_Ring" class="mw-redirect" title="Token Ring">Token Ring</a></li> <li><a href="/wiki/Wi-Fi" title="Wi-Fi">Wi-Fi</a></li></ul></div></div></td> </tr><tr><td style="padding:0 0.1em 0.4em"> <div class="NavFrame collapsed" style="border:none;padding:0"><div class="NavHead" style="font-size:105%;text-align:left">1. <a href="/wiki/Capa_f%C3%ADsica" title="Capa física">Capa física</a></div><div class="NavContent hlist" style="font-size:105%;padding:0.2em 0 0.4em;text-align:center"> <ul><li><a href="/wiki/Cable_coaxial" title="Cable coaxial">Cable coaxial</a></li> <li><a href="/wiki/Cable_de_fibra_%C3%B2ptica" class="mw-redirect" title="Cable de fibra òptica">Cable de fibra òptica</a></li> <li><a href="/wiki/Cable_de_parells_trenats" title="Cable de parells trenats">Cable de parells trenats</a></li> <li><a href="/wiki/Microones" title="Microones">Microones</a></li> <li><a href="/wiki/R%C3%A0dio" title="Ràdio">Ràdio</a></li> <li><a class="mw-selflink selflink">RS-232</a></li> <li><a href="/wiki/RS-485" title="RS-485">RS-485</a></li></ul></div></div></td> </tr><tr><td style="padding:0.3em 0.4em 0.3em;font-weight:bold;border-top: 1px solid #aaa; border-bottom: 1px solid #aaa;"> <a href="/wiki/Categoria:Xarxes_inform%C3%A0tiques" title="Categoria:Xarxes informàtiques">Xarxes informàtiques</a></td></tr><tr><td style="text-align:right;font-size:115%;padding-top: 0.6em;"><div class="plainlinks hlist navbar mini"><ul><li class="nv-view"><span typeof="mw:File"><a href="/wiki/Plantilla:Barra_lateral_amb_llistes_plegables" title="Plantilla:Barra lateral amb llistes plegables"><img alt="Vegeu aquesta plantilla" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/18px-Commons-emblem-notice.svg.png" decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/27px-Commons-emblem-notice.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/28/Commons-emblem-notice.svg/36px-Commons-emblem-notice.svg.png 2x" data-file-width="48" data-file-height="48" /></a></span></li></ul></div></td></tr></tbody></table> <p><br /> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:DB25_Diagram.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/DB25_Diagram.svg/220px-DB25_Diagram.svg.png" decoding="async" width="220" height="59" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/DB25_Diagram.svg/330px-DB25_Diagram.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/DB25_Diagram.svg/440px-DB25_Diagram.svg.png 2x" data-file-width="558" data-file-height="150" /></a><figcaption>Un connector <a href="/wiki/D-sub" title="D-sub">DB</a>-25 tal com es descriu en l'estàndard RS-232</figcaption></figure> <p>L'<b>RS-232</b> o <b><a href="/wiki/Electronic_Industries_Alliance" title="Electronic Industries Alliance">EIA</a> RS-232C</b> és una interfície que designa una norma per a l'intercanvi en sèrie de <a href="/w/index.php?title=Dades_bin%C3%A0ries&action=edit&redlink=1" class="new" title="Dades binàries (encara no existeix)">dades binàries</a> entre un equip terminal de dades i un <a href="/w/index.php?title=DCE&action=edit&redlink=1" class="new" title="DCE (encara no existeix)">DCE</a> (Data Communication Equipment),<sup id="cite_ref-eia_1-0" class="reference"><a href="#cite_note-eia-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> tot i que existeixen altres situacions on pot ser emprat. </p><p>En particular, hi ha casos en què interessa connectar un altre tipus d'equipaments, com en el dels <a href="/wiki/Ordinador" title="Ordinador">ordinadors</a>. Evidentment, en el cas d'interconnexió entre els mateixos es requerirà la connexió d'un DTE (<i>Data Terminal Equipment</i>) amb un altre DTE. Per a aquest fi s'utilitza una connexió entre els dos DTE sense utilitzar mòdem; per això s'anomena "null modem" o <i>mòdem nul.</i> </p><p>En principi, l'RS-232 consisteix en un connector del tipus <a href="/wiki/D-sub" title="D-sub">DB-25</a> (de 25 pins), tot i que és habitual trobar-ne la versió de 9 pins (<a href="/wiki/D-sub" title="D-sub">DE-9</a>), més barata i, de fet, més estesa per a determinats tipus de perifèrics, com el ratolí serial del PC. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Construcció_física"><span id="Construcci.C3.B3_f.C3.ADsica"></span>Construcció física</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=RS-232&action=edit&section=1" title="Modifica la secció: Construcció física"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La interfície RS-232 està dissenyada per a distàncies curtes, de fins a 15 metres depenent de la norma, i per a velocitats de comunicació baixes, de no més de 20 <a href="/wiki/Kilobit" title="Kilobit">kilobits</a>/<a href="/wiki/Segon" title="Segon">segon</a>. Malgrat això, moltes vegades s'utilitza a majors velocitats amb un resultat acceptable. La interfície pot treballar en comunicació <a href="/wiki/Comunicaci%C3%B3_as%C3%ADncrona" title="Comunicació asíncrona">asíncrona</a> o <a href="/w/index.php?title=Transmissi%C3%B3_s%C3%ADncrona&action=edit&redlink=1" class="new" title="Transmissió síncrona (encara no existeix)">síncrona</a> i tipus de canal <i>simplex</i>, <i>half-duplex</i> o <i>full-duplex</i>. En un canal <i>simplex</i> les dades sempre viatjaran en una direcció, per exemple des de DCE fins a DTE. En un canal <i>half duplex</i>, les dades poden viatjar en una o altra direcció, però només durant un determinat període; després la línia ha de ser commutada abans que les dades puguin viatjar en l'altra direcció. En un canal <i>full dúplex</i>, les dades poden viatjar en ambdós sentits simultàniament. Les línies de <i>handshaking</i> del RS-232 s'utilitzen per a resoldre els problemes associats amb aquest mode d'operació tal com en quina direcció les dades han de viatjar en un instant determinat. </p><p>Si un dispositiu dels que estan connectats a una interfície RS-232 processa les dades a una velocitat menor de la que els rep, han de connectar-se les línies <i>handshaking</i> que permeten realitzar un control de flux tal que al dispositiu més lent li doni temps de processar la informació. Les línies de "<i><a href="/w/index.php?title=Hand-shaking&action=edit&redlink=1" class="new" title="Hand-shaking (encara no existeix)">hand-shaking</a></i>" que permeten fer aquest control de flux són les línies RTS i CTS. Els dissenyadors de l'estàndard van concebre aquestes línies perquè funcionin d'aquest mode, però donada la seva utilitat en cada interfície posterior s'inclou aquest mode d'ús. </p> <div class="mw-heading mw-heading2"><h2 id="Senyals_de_dades_i_control">Senyals de dades i control</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=RS-232&action=edit&section=2" title="Modifica la secció: Senyals de dades i control"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La taula següent enumera els senyals RS-232 d'ús habitual (anomenats "circuits" a les especificacions) i les seves assignacions de pins als connectors DB-25 recomanats  (vegeu <a href="/wiki/Port_s%C3%A8rie#Pinouts" title="Port sèrie">Pinouts del port sèrie</a> per a altres connectors d'ús habitual no definits per l'estàndard). </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:CAN_Connecteur.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/CAN_Connecteur.svg/220px-CAN_Connecteur.svg.png" decoding="async" width="220" height="103" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/CAN_Connecteur.svg/330px-CAN_Connecteur.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/CAN_Connecteur.svg/440px-CAN_Connecteur.svg.png 2x" data-file-width="128" data-file-height="60" /></a><figcaption>Pinout masculí d'un port sèrie de 9 pins (D-sub, DE-9) que es trobava habitualment als ordinadors dels anys noranta.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:DB-25_male.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/DB-25_male.svg/220px-DB-25_male.svg.png" decoding="async" width="220" height="59" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/DB-25_male.svg/330px-DB-25_male.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/85/DB-25_male.svg/440px-DB-25_male.svg.png 2x" data-file-width="224" data-file-height="60" /></a><figcaption>Pinout masculí d'un port sèrie de 25 pins (D-sub, DB-25) que es trobava habitualment als ordinadors dels anys 80.</figcaption></figure> <table class="wikitable sortable"> <tbody><tr> <th colspan="3">Circuit </th> <th colspan="2">Direcció </th> <th rowspan="2">Pin <a href="/wiki/D-sub" title="D-sub">DB-25</a> </th> <th rowspan="2">Pin <a href="https://en.wikipedia.org/wiki/D-subminiature#DE9_connectors" class="extiw" title="en:D-subminiature">DE-9</a> (TIA-574) </th></tr> <tr> <th>Nom </th> <th>Propòsit típic </th> <th>Abreviatura </th> <th>DTE </th> <th>DCE </th></tr> <tr> <td>Terminal de dades preparat </td> <td>El DTE està preparat per rebre, iniciar o continuar una trucada. </td> <td>DTR </td> <td>Sortida </td> <td>Entrada </td> <td>20 </td> <td>4 </td></tr> <tr> <td>Detecció de portador de dades </td> <td>El DCE està rebent un operador d'un DCE remot. </td> <td>DCD </td> <td>Entrada </td> <td>Sortida </td> <td>8 </td> <td>1 </td></tr> <tr> <td>Conjunt de dades preparat </td> <td>El DCE està preparat per rebre i enviar dades. </td> <td>DSR </td> <td>Entrada </td> <td>Sortida </td> <td>6 </td> <td>6 </td></tr> <tr> <td>Indicador de trucada </td> <td>El DCE ha detectat un senyal de timbre entrant a la línia telefònica. </td> <td>RI </td> <td>Entrada </td> <td>Sortida </td> <td>22 </td> <td>9 </td></tr> <tr> <td>Sol·licitud d'enviament </td> <td>El DTE demana que el DCE es prepari per transmetre dades. </td> <td>RTS </td> <td>Sortida </td> <td>Entrada </td> <td>4 </td> <td>7 </td></tr> <tr> <td>Preparat per rebre </td> <td>El DTE està preparat per rebre dades de DCE. Si està en ús, se suposa que RTS sempre s'afirma. </td> <td>RTR </td> <td>Sortida </td> <td>Entrada </td> <td>4 </td> <td>7 </td></tr> <tr> <td>Permís per enviar </td> <td>El DCE està preparat per acceptar dades del DTE. </td> <td>CTS </td> <td>Entrada </td> <td>Sortida </td> <td>5 </td> <td>8 </td></tr> <tr> <td>Dades transmeses </td> <td>Transporta dades del DTE al DCE. </td> <td>TxD </td> <td>Sortida </td> <td>Entrada </td> <td>2 </td> <td>3 </td></tr> <tr> <td>Dades rebudes </td> <td>Transporta dades del DCE al DTE. </td> <td>RxD </td> <td>Entrada </td> <td>Sortida </td> <td>3 </td> <td>2 </td></tr> <tr> <td>Terra comú </td> <td>Referència de tensió zero per a tot l'anterior. </td> <td>GND </td> <td colspan="2"><small>Comú</small> </td> <td>7 </td> <td>5 </td></tr> <tr> <td>Terra protector </td> <td>Connectat a terra del xassís. </td> <td>PG </td> <td colspan="2"><small>Comú</small> </td> <td>1 </td> <td>— </td></tr></tbody></table> <p>Els senyals s'anomenen des del punt de vista del DTE. El pin de terra és un retorn comú per a les altres connexions i estableix la tensió "zero" a la qual es fan referència les tensions dels altres pins. El connector DB-25 inclou una segona "massa protectora" al pin 1; això està connectat internament a la terra del xassís de l'equip i no s'ha de connectar al cable o connector a la terra del senyal. </p> <div class="mw-heading mw-heading2"><h2 id="Eines_pel_desenvolupament">Eines pel desenvolupament</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=RS-232&action=edit&section=3" title="Modifica la secció: Eines pel desenvolupament"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Quan s'està desenvolupant o resolent problemes en RS-232, una anàlisi profunda dels <a href="/wiki/Senyal_digital" title="Senyal digital">senyals</a> físics pot ser molt important per trobar problemes. Un analitzador de línies sèrie és un dispositiu similar a un analitzador lògic però especialitzat pels nivells de voltatge, connectors i senyals de rellotge de RS-232. L'analitzador de línies sèrie pot adquirir, emmagatzemar i mostrar dades i senyals de control, permetent així als desenvolupadors a veure'ls en detall. N'hi ha de diversos tipus, alguns només mostren els senyals en forma d'ones; alguns altres més elaborats inclouen l'habilitat de descodificar caràcters <a href="/wiki/ASCII" title="ASCII">ASCII</a> o altres codis, per interpretar els protocols comuns usats sobre RS-232 com SDLC, HDLC, DDCMP i X.25. Els analitzadors de línies sèrie estan disponibles com a <a href="/wiki/Maquinari" title="Maquinari">maquinari</a> independent, com a <a href="/wiki/Interf%C3%ADcie" title="Interfície">interfície</a> de cablejat i <a href="/wiki/Programari" title="Programari">programari</a> per a analitzadors lògics de propòsit general i com a programari capaç d'executar-se en <a href="/wiki/Ordinador_personal" title="Ordinador personal">PCs</a> d'ús general. </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=RS-232&action=edit&section=4" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-eia-1"><span class="mw-cite-backlink"><a href="#cite_ref-eia_1-0">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal"> <i>EIA standard RS-232-C: Interface between Data Terminal Equipment and Data Communication Equipment Employing Serial Binary Data Interchange</i>.  Washington: Electronic Industries Association. Engineering Dept, 1969. <span style="font-size:90%;"><a href="/wiki/OCLC" class="mw-redirect" title="OCLC">OCLC</a> <a rel="nofollow" class="external text" href="http://worldcat.org/oclc/38637094">38637094</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=EIA+standard+RS-232-C%3A+Interface+between+Data+Terminal+Equipment+and+Data+Communication+Equipment+Employing+Serial+Binary+Data+Interchange&rft.date=1969&rft.pub=Electronic+Industries+Association.+Engineering+Dept&rft.place=Washington&rft_id=info:oclcnum/38637094"><span style="display: none;"> </span></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Vegeu_també"><span id="Vegeu_tamb.C3.A9"></span>Vegeu també</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=RS-232&action=edit&section=5" title="Modifica la secció: Vegeu també"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r33663753">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}.mw-parser-output .side-box-center{clear:both;margin:auto}}</style><div class="side-box metadata side-box-right plainlinks"> <div class="side-box-flex"> 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href="/w/index.php?title=MBus&action=edit&redlink=1" class="new" title="MBus (encara no existeix)">MBus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=STD_Bus&action=edit&redlink=1" class="new" title="STD Bus (encara no existeix)">STD Bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/SMBus" title="SMBus">SMBus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Q-Bus&action=edit&redlink=1" class="new" title="Q-Bus (encara no existeix)">Q-Bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Bus_ISA" title="Bus ISA">ISA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Zorro_II&action=edit&redlink=1" class="new" title="Zorro II (encara no existeix)">Zorro II</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Zorro_III&action=edit&redlink=1" class="new" title="Zorro III (encara no existeix)">Zorro III</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=CAMAC&action=edit&redlink=1" class="new" title="CAMAC (encara no existeix)">CAMAC</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=FASTBUS&action=edit&redlink=1" class="new" title="FASTBUS (encara no existeix)">FASTBUS</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Low_Pin_Count&action=edit&redlink=1" class="new" title="Low Pin Count (encara no existeix)">LPC</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=HP_Precision_Bus&action=edit&redlink=1" class="new" title="HP Precision Bus (encara no existeix)">HP Precision Bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Extended_Industry_Standard_Architecture&action=edit&redlink=1" class="new" title="Extended Industry Standard Architecture (encara no existeix)">EISA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=VMEbus&action=edit&redlink=1" class="new" title="VMEbus (encara no 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href="/wiki/VESA_Local_Bus" title="VESA Local Bus">VLB</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Peripheral_Component_Interconnect" title="Peripheral Component Interconnect">PCI</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/PXI" title="PXI">PXI</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=GSC_bus&action=edit&redlink=1" class="new" title="GSC bus (encara no existeix)">GSC bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=CoreConnect&action=edit&redlink=1" class="new" title="CoreConnect (encara no existeix)">CoreConnect</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/InfiniBand" title="InfiniBand">InfiniBand</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=UPA&action=edit&redlink=1" class="new" title="UPA (encara no existeix)">UPA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=PCI-X&action=edit&redlink=1" class="new" title="PCI-X (encara no existeix)">PCI-X</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Accelerated_Graphics_Port" title="Accelerated Graphics Port">AGP</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/PCI_Express" title="PCI Express">PCI Express (PCIe)</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/RapidIO" title="RapidIO">RapidIO</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Intel_QuickPath_Interconnect" title="Intel QuickPath Interconnect">Intel QuickPath Interconnect</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Hypertransport" class="mw-redirect" title="Hypertransport">Hypertransport</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Portables</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/PC_Card" title="PC Card">PC Card</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=ExpressCard&action=edit&redlink=1" class="new" title="ExpressCard (encara no existeix)">ExpressCard</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Encastats</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/w/index.php?title=Multidrop_bus&action=edit&redlink=1" class="new" title="Multidrop bus (encara no existeix)">Multidrop bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=AMBA&action=edit&redlink=1" class="new" title="AMBA (encara no existeix)">AMBA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Wishbone&action=edit&redlink=1" class="new" title="Wishbone (encara no existeix)">Wishbone</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Emmagatzematge</th><td class="navbox-list navbox-odd hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/w/index.php?title=ST-506&action=edit&redlink=1" class="new" title="ST-506 (encara no existeix)">ST-506</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/ESDI" class="mw-redirect" title="ESDI">ESDI</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Tecnologia_de_muntatge_superficial" title="Tecnologia de muntatge superficial">SMD</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Parallel_ATA" title="Parallel ATA">Parallel ATA (PATA)</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Direct_memory_access&action=edit&redlink=1" class="new" title="Direct memory access (encara no existeix)">DMA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Serial_Storage_Architecture&action=edit&redlink=1" class="new" title="Serial Storage Architecture (encara no existeix)">SSA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=HIPPI&action=edit&redlink=1" class="new" title="HIPPI (encara no existeix)">HIPPI</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=USB_MSC&action=edit&redlink=1" class="new" title="USB MSC (encara no existeix)">USB MSC</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/IEEE_1394" class="mw-redirect" title="IEEE 1394">IEEE 1394 interface (FireWire)</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Serial_ATA" title="Serial ATA">Serial ATA (SATA)</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/ESATA" class="mw-redirect" title="ESATA">eSATA</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=ESATAp&action=edit&redlink=1" class="new" title="ESATAp (encara no existeix)">eSATAp</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/SCSI" title="SCSI">SCSI</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Parallel_SCSI&action=edit&redlink=1" class="new" title="Parallel SCSI (encara no existeix)">Parallel SCSI</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Serial_attached_SCSI&action=edit&redlink=1" class="new" title="Serial attached SCSI (encara no existeix)">SAS</a></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Perifèrics</th><td class="navbox-list navbox-even hlist" style="text-align:left;border-left-width:2px;border-left-style:solid;width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/Apple_Desktop_Bus" title="Apple Desktop Bus">Apple Desktop Bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=HIL&action=edit&redlink=1" class="new" title="HIL (encara no existeix)">HIL</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/MIDI" title="MIDI">MIDI</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Multibus&action=edit&redlink=1" class="new" title="Multibus (encara no existeix)">Multibus</a> <span style="font-weight:bold;"> ·</span>  <a class="mw-selflink selflink">RS-232</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/RS-422" title="RS-422">RS-422</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/RS-423" title="RS-423">RS-423</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/RS-485" title="RS-485">RS-485</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=DMX512-A&action=edit&redlink=1" class="new" title="DMX512-A (encara no existeix)">DMX512-A</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/IEEE-488" title="IEEE-488">IEEE-488 (GPIB)</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/IEEE_1284" title="IEEE 1284">IEEE-1284 (port paral·lel)</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=UNI/O&action=edit&redlink=1" class="new" title="UNI/O (encara no existeix)">UNI/O</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=ACCESS.bus&action=edit&redlink=1" class="new" title="ACCESS.bus (encara no existeix)">ACCESS.bus</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=1-Wire&action=edit&redlink=1" class="new" title="1-Wire (encara no existeix)">1-Wire</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/I%C2%B2C" title="I²C">I²C</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Serial_Peripheral_Interface" title="Serial Peripheral Interface">SPI</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/SCSI" title="SCSI">SCSI</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Profibus" title="Profibus">Profibus</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Universal_Serial_Bus" class="mw-redirect" title="Universal Serial Bus">USB</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/IEEE_1394" class="mw-redirect" title="IEEE 1394">IEEE 1394 (FireWire)</a> <span style="font-weight:bold;"> ·</span>  <a href="/w/index.php?title=Camera_Link&action=edit&redlink=1" class="new" title="Camera Link (encara no existeix)">Camera Link</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/PCI_Express#PCI_Express_External_Cabling" title="PCI Express">External PCIe</a> <span style="font-weight:bold;"> ·</span>  <a href="/wiki/Thunderbolt" title="Thunderbolt">Thunderbolt</a></div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div><small><i>Nota: les interfícies estan ordenades de menor a major velocitat, la última interfície de cada secció és la més ràpida</i></small><br /><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Symbol_question.svg/16px-Symbol_question.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Symbol_question.svg/24px-Symbol_question.svg.png 1.5x, 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