Ken&Den picture

<HTML> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">  <title>Ken&Den picture</title> </head> <BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#330088" ALINK="#FF0044"> <center> <h3> An amusing photo </h3> </center> Here's a publicity photo from about 1972, showing Ken and me in front of a PDP-11. From the right, the major items of equipment are <ul> <li>At the far right, on the table, are what someone discerned was a VT01A storage-tube display (based on Tek 611) and a small keyboard for it. Slightly hard to make out. <li>A main CPU cabinet, partly behind the table. The processor is a PDP-11/20; it must have been our second one, with the Digital Special Systems KS-11 memory management unit. Our very first just said "PDP11," not "11/20." The arrays of distorted rectangles above it and in other cabinets are the labels on DECtape canisters. <li>Another cabinet. Careful examination of the image by Steve Westin detects the top of the bezel of an 11/45 CPU barely peeking above the TTY to the right of the one Ken is typing at. A paper tape reader is above it. <li> The third cabinet sports a dual DECtape drive at the top. <li>A cabinet with another DECtape drive, probably also containing BA-11 extension boxes within. <li>A cabinet with RK03 disk drives. These were made by Diablo (subsumed by Xerox) and OEMed to Digital. Digital later began manufacturing their own version (RK05). <li>A cabinet containing RF11/RS11 controller and fixed-head disks. By this time / and swap space lived there, while /usr was on the RK03s. <li>On top of the machine are what look like magtapes. A probable TU10 transport is barely visible just below Ken's chin, at least if you have the monitor brightness and contrast adjusted favorably. </ul> In front, we have <ul> <li>Ken (sitting) and me (standing), both with more luxuriant and darker hair than we have now. Scientific American March 1999 p. 48 should have checked the IDs; we're interchanged in its caption of this same picture. <li> Two Teletype 33 terminals </ul> <center> <img src="kd14.jpg" alt="Ken and Dennis by PDP-11"> </center> If you want a giant (2.1 MB) JPEG version at higher resolution, click <a href="ken-and-den.jpg">here</a>). More <A href="http://www.psych.usyd.edu.au/pdp-11">pictures of PDP-11 equipment</A> are available in John Holden's collection. </html>

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Ken&Den picture