Could you make PCB photos of LJN Electronic Concentration?
Speaking of LJN, here's a failed product that we don't emulate yet in MAME: There's a bare console one for $20 right now on ebay, if anyone wants to dump it. Or we could do the future generation a favour by making them forget this ever existed?
*edit* @Rik if you're reading, do you know the MCU label of LJN Computer Impulse?