On May 22, Pete Turnbull wrote:
Four boards
#20033 - each has a tiny 4 pin connector and a tiny coax type
connector (much smaller than 10b2). Main chip is N8X305N
I've seen N8X305N somewhere recently, but I can't remember what it is :-(
It's a Signetics part, if you want to search for it.
It's a microcontroller...very early architectural ancestor of
today's PICs if memory serves.
-Dave McGuire