On 10/06/2018 01:40 PM, Al Kossow via cctalk wrote:
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
Possibly, although there are quite a few ICs with 1976 and 1977 date codes
which don't give the impression of being repair parts - I'm not sure what
the lifespan of the 4200 was. Of course the Wikipedia article is quite
light on details though, so perhaps there were other models not mentioned,
or tweaks to the 4200's design to keep it 'current' as time went on.
Mike might be able to ID the boards
I've dumped images of the six boards temporarily here:
http://www.classiccmp.org/acornia/tmp/c1.jpg
http://www.classiccmp.org/acornia/tmp/c2.jpg
http://www.classiccmp.org/acornia/tmp/c3.jpg
and finally the smaller "tape board" is bottom-right in this group of misc.:
http://www.classiccmp.org/acornia/tmp/c.jpg
(I've no idea what the others are in that photo. Top little one is
Sperry. There were lots of "industrial" boards in the scrap pile, though -
CNC control boards and the like - so quite possibly not computer-related at
all)
cheers
Jules
