computers Archive

Meet the Megaprocessor: a 16-bit CPU the size of a room

Chipmaking is a relentless competition to make transistors smaller and smaller. Such refined technology is as inscrutable to users as angels dancing on the head of a few hundred copper pins, so James Newman set out to make a working CPU whose every connection can be explored and understood by students. “Like all modern processors the Megaprocessor is built from transistors,” he writes. “It’s …