The Control Unit of the Computer that directs the input and output devices is called the:

• A. Arithmetic Logic Unit.
• B. Random Access Memory.
• C. Monitor.
• D. Central Processing Unit.

Answer: (D)

The central processing unit is the part of the computer that coordinates all operations, acting as the “brain.” Its control unit sits inside the CPU and issues the signals that guide every operation, including how data moves to and from input and output devices, what the Arithmetic Logic Unit should compute, and how memory is accessed. The other options don’t handle the overall coordination: the arithmetic logic unit performs calculations and logic tests, RAM is just temporary storage, and a monitor is a display device. So the CPU is the best answer because it encompasses the control and coordination of processing and I/O.