His Nibbler implements a 4-bit CPU using 7400 logic chips. Because he’s come up with the architecture himself he’s taking a lot of steps to check all of his work before committing to a PCB.
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 ...
In the early days of microprocessors, bit slice processors ... which included the Am2901 4-bit slice ALU. See ALU. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.