A control unit (CU) is a central, sometimes distributed but clearly distinguishable, part of a mechanism that controls its operation, for example in a computer or a motor vehicle.
Control unit may refer to:
- Control unit, a component of a computer's central processing unit
- Prison#Control_units, a special area of a prison that is used to keep prisoners in solitary confinement (also called a "segregation unit")
- Another name for a Controller (computing)
- Multipoint control unit, a device commonly used to bridge videoconferencing connections
- Packet control unit, performs some of the processing tasks of a base station subsystem
- Premises control unit, the "brain" of a burglar alarm
- Telecommunication control unit, a device attached to a computer multiplexer channel which supports multiple terminals
- Camera control unit, typically part of a live television broadcast "chain"
- Electronic control unit, an embedded system that controls electrical systems in a motor vehicle
- Engine control unit, an electronic control unit that controls a series of actuators on an internal combustion engine
- Fuel control unit, a control system for gas turbine engines
- Transmission control unit, a device that controls electronic automatic transmissions, and automated clutch systems, such as servos or actuators, in a clutchless manual or semi-automatic transmission.
- Control car (rail), a non-powered railroad vehicle that can control the operation of a train
- Actuator control unit, or ACU is a control unit for actuators (Often used in production- and process plants) but can also be used in home automation and the internet of things