controllers

an employee, often an officer, of a business firm who checks expenditures, finances, etc.; comptroller.

a person who regulates, directs, or restrains.

British Aeronautics. a dispatcher.

a regulating mechanism; governor.

Also called control unit, processor. Computers. the key component of a peripheral device, as a terminal, printer, or external storage unit, that contains the circuitry necessary to interpret and execute instructions fed into the device.