As part of extensive historical research I've been doing for a couple of years now, yesterday I reverse-engineered an instrument manufactured in my country in the early 1980s. Today I reviewed it, and I think I did it right.
The next one I will reverse-engineer is one named LOGICID-1, from 1982, for which I only have the circuit and a little information. It's missing some chips; two are BCD-7seg decoders; I'm not sure about the other three. Unfortunately, very little remains of these instruments, which is why I'm doing this. I found one from the second generation for sale. To see a little more information about this one, part of the work Im doing, go here.-> https://tecnohistoriacubana.wordpress.com/cid … ital-universal/