controller (redirected from comptroller)

An electronic circuit board or system. In a computer, controllers contain the circuitry to run a peripheral device and are either contained on a plug-in expansion board or on the motherboard. In larger computers, a controller may be contained on one or more boards or in an external, stand-alone cabinet. See also video game controller.

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(hardware)

controller - Part of a computer, typically a separate circuit board, which allows the computer to use certain kinds of peripheral devices. A disk controller is used to connect hard disks and floppy disks, a network controller is used for Ethernet. Other controllers are: keyboard controller, interrupt controller and graphics controller.