Just wondering if anyone has description and pinout of the old 989102
and 989105 I.C. chips???
You've asked about these several times and nobody has replied, so I think
it's a good guess that none of us recognise those numbers (they look like
house codes to me).
A bit more information would help. How many pins do these ICs have. What
sort of package (DIL, PGA, PLCC, etc). Plastic or ceramic? Is there a
manufacturer's logo on them? Do you have any idea what they are?
-tony