The International Obfuscated C Code Contest results were announced this last weekend, and I was thrilled to see that my entry was among the winners. In this article I want to walk through what it is: a feature-complete gate-level emulator for the Intel 4004 that's capable of emulating the original Busicom 141-pf calculator ROM---the application for which the 4004 was originally designed. To make things exciting, this program doesn't emulate the 4004 the "normal" way. Instead, this program is ac...