Early history: 1971--1975
1971: Intel 4004 4-bit microprocessor; equals ENIAC in compute power: 2300 transistors, 0.75MHz, 8KB ROM, 16KB RAM
1972: Intel 8008 8-bit microprocessor
1973: French Micral with 8008: first desktop personal computer (some credit Altair)
1975: IBM 801 (first RISC microprocessor)