Which DEC machine made use of th pre Flip-Chip board?

Bob Rosenbloom bobalan at sbcglobal.net
Fri Dec 21 12:01:44 CST 2018

On 12/21/2018 2:49 AM, Mattis Lind via cctalk wrote:
> There is an auction for some kind of early DEC module. It appears to be a
> bit slice of MB, AR and MQ. There is also a signature by Gordon Bell on the
> board.
> But I cannot figure out which early machine it comes from.
> https://www.ebay.com/itm/Vintage-DEC-6205-Arithmetic-Registers-Circuit-Board-for-Vintage-Mainframe/264093791320?hash=item3d7d377458:g:U2AAAOSwpTBcGULN
> The same seller has several other pre Flip-Chip modules like 4706 Teletype
> Receiver. If I read correctly the transistors are dated 1963-1964.
> https://www.ebay.com/itm/Vintage-DEC-4706C-8-Bit-Teletype-Receiver-Circuit-Board-for-Vintage-Mainframe/323607301613?hash=item4b587f8ded:g:AMcAAOSwXF5cGUH9
They are from a PDP_5. I have a 5 so am bidding on a few of the boards.


Vintage computers and electronics

More information about the cctech mailing list