Controller

<hardware> 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.

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control-C control code control flow control-G Control Language	3DO address Address Strobe Advanced Communication Function/Network Control Pr Advanced Programmable Interrupt Controller	control-O Control Program Control Program for Microcomputers control-Q control-S