CPT boards

[Al Kossow]

could be part of a 4200 or a VM

http://www.ricomputermuseum.org/Home/small-systems-at-ricm/cpt-4200-series-typewriter

since the date codes are early, i'd guess the 4200

Mike might be able to ID the boards


On 10/6/18 10:48 AM, Jules Richardson via cctalk wrote:
> 
> I borrowed a pile of scrap 1970s-era PCBs from my local recycler yesterday, just to make sure there was nothing
> important among them before they go off for processing. Among them are six boards branded as CPT, which I assume (as I'm
> in MN) is the CPT Corporation that was in Minneapolis.
> 
> The double-sided boards are organized in five rows of five ICs, with 44-way edge connectors and IC date codes in the
> 1973-1977 range. I seem to have p/n's 910012, 910014, 910015, 910017, 910018 and 910022.
> 
> In addition to this there's a smaller board which references "deck 1 heads" and "deck 2 heads", and appears to have a
> p/n of 910025.
> 
> Does this ring any bells with anyone? The Wikipedia entry for CPT mentions the 'VM' machine in 1976 with dual tape
> units, so I wonder if they're from one of those... if so, I'm curious if there are any surviving intact examples out
> there (or other info, there doesn't appear to be any CPT stuff on bitsavers)
> 
> cheers
> 
> Jules