The 4004 block diagram. Image by Despite these difficulties, Faggin delivered the CPU by December of 1970. ... Intel's 4004 would be replaced by the 8008, 8080, 8085, and, ...

50 years ago today, on November 15 1971, Intel launched the 4004 and, by extension, the modern computer age. The 4004 was the first commercially-produced microprocessor, or CPU.