Meaning of controller

con•trol•ler

Pronunciation: (kun-trō'lur), [key]
— n.
  1. an employee, often an officer, of a business firm who checks expenditures, finances, etc.; comptroller.
  2. a person who regulates, directs, or restrains.
  3. a dispatcher.
  4. a regulating mechanism; governor.
  5. Also calledthe 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: