Microcontrollers started (oversimplifying a bit) with calculator-based chips: the Intel 4004 (1971), TMS 0100 (1971), TMS 1000 (1974). The Motorola one-bit proc

Microcontrollers started (oversimplifying a bit) with calculator-based chips: the Intel 4004 (1971), TMS 0100 (1971), TMS 1000 (1974). The Motorola one-bit processor is from 1976, so it's a later chip, more of a strange branch than a precursor.