[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.

I've been examining the Pentium's circuitry in detail, and I came across a circuit to multiply ... A diagram of an 8-bit Kogge-Stone adder highlighting the carry out of bit 6 (green) and out ...