[Phillip] wanted to play with the C preprocessor. He decided to do that by creating a 4 bit full adder. We know this is pretty useless in everyday life, but it was a great learning experience.

In order to answer these questions a bit more and start learning programming, [Nakazoto] built a 10-bit binary adder with relays ... 2 sum register boards, a carry register board and a 1-bit ...