4004

Developed by Ted Hoff, Masatoshi Shima, and others at Intel and released on November 15, 1971. The 4004 was smaller than a human thumbnail and was the first processor with a 4-bit register and a clock speed of 740 kHz. The 4004 had 2,300 transistors with 10-micron spacing, 60,000 OPS, and cost $200.00 with as much computing power as the ENIAC computer.