I just copied the email to a friend who was at CDC ad he says they were from the CDC3100.
cheers, Nigel Nigel Johnson, MSc., MIEEE, VE3ID/G4AJQ/VA3MCU Amateur Radio, the origin of the open-source concept! Skype: TILBURY2591 nw.john...@ieee.org On 07/07/2020 13:29, Paul Koning via cctalk wrote: > >> On Jun 18, 2020, at 4:14 PM, Peter Van Peborgh via cctalk >> <cctalk@classiccmp.org> wrote: >> >> OK, now here are some pics that should be available to everybody. I hope. >> >> https://photos.app.goo.gl/h64tye8ecmPHQfJD7 >> >> Smells of (early) 1960s transistorized. >> No helpful marking apart from >> * "GATE JJ01" on SIDE A. (components). >> * "C NT OL DATA" on side B (solder traces). >> >> Big transistors are Motorola "180376008". Also, any ideas what the "246 636 >> B" boxes are, they have four legs? >> >> A curse on TinyURL and praise to Camiel Vanderhoven. >> >> peter > Since CDC was mentioned I forwarded the question to a list of CDC people and > CDC system hobbyists. Here's a reply that may be useful: > >> On Jul 6, 2020, at 8:59 PM, Joe Cychosz <3ksn...@ecn.purdue.edu> wrote: >> >> Originally I said not CDC but I found this on ebay. >> https://www.ebay.com/itm/Vintage-CONTROL-DATA-Computer-Module-PCB-196Os/283900083657 >> >> I had seen boards like this earlier and have a few but they are LEC >> (lockhead electronics corporation). Interesting this one has lec on 1 side >> and cdc on the other side. I suspect CDC manufactured these for LEC. CDC >> could have been secondary contractor for Lockhead on a government project. >> >> Joe