control signal
  • noun an electrical signal transmitted to control the actions of a circuit
  • A signal utilized to control a device or process. In a computer, for instance, such a signal may be an interrupt request.
  • In telecommunications, a signal that transmits control information. For example, a customer picks up a telephone receiver, hears a dial tone, dials a sequence of digits, and then gets a busy signal. All the tones heard are control signals.

Not what you were looking for?