On the subject of the PDP-10, I recall seeing people at a DECUS meeting in the early 1980s wearing T-shirts that proclaimed I don't care what they say, 36 bits are here to say! I also recall a funny advertizing video spoof at that meeting that ended with the line At DIGITAL, we're building yesterday's tomorrow, today. That meeting was about the time of the cancellation of the Jupiter project at DEC that was planned to produce a substantially more powerful follow-on to the KL-10 processor model of the PDP-10 (we had two such at the UofUtah), disappointing most of its PDP-10 customers. Some of the Jupiter technology was transferred to later VAX models, but DEC never produced anything faster than the KL-10 in the 36-bit line. However, with microcomputers entering the market, and early workstations from Apollo, LMI, Sun, and others, the economics of computing changed dramatically, and departmental mainframes ceased to be cost effective. Besides our mainframe DEC-20/60 TOPS-20 system in the College of Science, we also ran Wollongong BSD Unix on a VAX 750, and DEC VMS on VAX 780 and 8600 models. In 1987, we bought our first dozen Sun workstations (and for far less than the cost of a DEC-20/60). After 12 good years of service (and a forklift upgrade from a 20/40 to a 20/60), our KL-10 was retired on 31-Oct-1990, and the VAX 8600 in July 1991. Our productivity increased significantly in the Unix world. I wrote about memories and history and impact of the PDP-10 in two keynote addresses at TUG meetings in articles and slides available at http://www.math.utah.edu/~beebe/talks/2003/tug2003/ http://www.math.utah.edu/~beebe/talks/2005/pt2005/ ------------------------------------------------------------------------------- - Nelson H. F. Beebe Tel: +1 801 581 5254 - - University of Utah FAX: +1 801 581 4148 - - Department of Mathematics, 110 LCB Internet e-mail: beebe(a)math.utah.edu - - 155 S 1400 E RM 233 beebe(a)acm.org beebe(a)computer.org - - Salt Lake City, UT 84112-0090, USA URL: http://www.math.utah.edu/~beebe/ - -------------------------------------------------------------------------------