Fun fact: the microprocessor isn't really an invention, but rather something that everyone knew would happen, and it was just a matter of waiting for the technology and market to be correct.
It was obvious in the late 1960s that a CPU board, built out of dozens of TTL chips, would eventually be put on a single chip, and . And it was just a matter of time for the density of MOS chips to improve to the point that it was practical. [https://www.righto.com/2015/05/the-texas-instruments-tmx-1795-first.html Source]
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