 The result of their work was the TMS 1000, which became commercially available in 1974.It combined read-only memory, read/write memory, processor and clock on one chip and was targeted at embedded systems.During the early-to-mid-1970s, Japanese electronics manufacturers began producing microcontrollers for automobiles, including 4-bit MCUs for in-car entertainment, automatic wipers, electronic locks, and dashboard, and 8-bit MCUs for engine control.