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Even before the birth of the CPU, however, there were small computers built with integrated circuits and transistors - much like early video games such as PONG, which also did not use a CPU.
Among the early home-built computers predating the CPU was one built by future Apple founder Steve Wozniak called the Cream Soda Computer. And in 1971, John Blankenbaker produced the pre-CPU KenBak-1, which was advertised in Scientific American Magazine at a price of $750 (right).
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