1. The part of a CPU that sends control signals to other components to cause them to execute the machine cycle - fetch, decode, execute, store.
2. Any device that controls the I/O operations of one or more peripheral devices, e.g. a disk controller.
Last updated: 2008-05-21
control tty ♦ control unit ♦ conventional memory ♦ converged network
Try this search on Wikipedia, Wiktionary, Google, OneLook.