Talk:List of Programmed Data Processors
Meaning of "PDP"
Was this changed at some point? I've seen it as "Programmed Data Processor" elsewhere (e.g. https://www.computerhistory.org/pdp-1/introduction/) and I'm looking at a picture of the front of a PDP-1 where a label also uses the same. Tor (talk) 08:47, 10 May 2021 (CEST)
Doug Jones' PDP-8 FAQ says "There is also a story about the PDP-2 1/2, built by Ed Rawson of the American Science Institute out of surplus modules that were originally used in the prototype PDP-2." Searching for clues we find this alt.sys.pdp10 message by Max ben-Aaron dated February 1997:
In the late 60's & early 70's I worked for a company (Medidata, later Searle Medidata) which started life as a not-for-profit spin-off from Lincoln Lab. (as I have heard), called American Science Institute. The chief engineer, Ed Rawson was a friend of Dec's Olsen and he managed to get hold of the modules used for the prototype PDP-2 which never reached the market. ASI used them to build their own machine (designed, I believe, by Chuck Corderman) which they called "Casino" and was sometimes jocularly referred to as a PDP-2 1/2. Casino was noteworthy for having, very early in trhe game, graphics capabilities. It also had some special terminals which had labels that cannot be repeated on this (family) newsgroup.