- Aug 07, 2018-

The controller refers to the main device which changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit to control the start-up, speed, braking and reverse of the motor in accordance with the predetermined order. It is composed of program counter, instruction register, instruction decoder, time series generator and operation Controller, which is the "decision-making body" of issuing order, which completes the operation of coordinating and directing the whole computer system.