A programmable logic controller (PLC) or programmable controller is a digital computer used for automation of industrial processes, such as control of machinery on factory assembly lines. Unlike general-purpose computers, the PLC is designed for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact. Programs to control machine operation are typically stored in battery-backed or non-volatile memory. A PLC is an example of a real time system since output results must be produced in response to input conditions within a bounded time, otherwise unintended operation will result.

Totusi, termenul poate fi lasat exact asa cum este (PLC), deoarece specialistii stiu despre ce este vorba. Sau poate fi tradus o singura data (atunci cand este intalnit prima oara in cadrul lucrarii).