The control unit and monitor are two separate components of a computer system.

The control unit is a part of the CPU (Central Processing Unit) which manages the execution of instructions and controls the flow of data within the computer. It interprets the commands issued by the computer program and directs the other parts of the CPU to execute them.

The monitor, on the other hand, is the display screen that shows the output of the computer. It allows the user to interact with the computer by displaying images, videos, text, and other graphical elements.

Although the control unit and monitor are two separate components, they work together to enable the computer to function properly. The control unit sends signals to the monitor, informing it what to display, and the monitor displays the information for the user to see.