His Nibbler implements a 4-bit CPU using 7400 logic chips ... That’s a feat considering this is still just a design idea. It was made possible because he wrote a simulator based on the design.
serial-out and parallel-out shift register 4004: 4-bit CPU In April 1970, Noyce hired Federico Faggin from Fairchild in order to do the chip design. At that time the block diagram and basic ...
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