[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.

Other articles on binary adders on the site include this one which uses bigger relays, and this 2-bit adder which uses 555 timers.

The company disclosed the development of a quantum algorithm technology, featuring a FULL adder operation based on ... which identifies hidden bit strings in a single query, this breakthrough ...

(the "Company" or "MicroAlgo") (NASDAQ: MLGO), today announced the successful development of a groundbreaking quantum algorithm technology, specifically a FULL ... bit can only be in one of ...

(the "Company" or "MicroAlgo") (NASDAQ: MLGO), today announced the successful development of a groundbreaking quantum algorithm technology, specifically a FULL adder operation based on CPU registers .