Q3. What are the components of CPU? What is its role? What is the function of control unit of CPU?
Ans. The CPU is the control centre for a computer. It guides, directs and governs its performance. It is the brain of the computer. The CPU has two components which are responsible for different functions. These two components are its Control Unit (CU) and Arithmetic Logic Unit (ALU).
Arithmetic Logic Unit (ALU) carries out arithmetic and logical operations.
Control Unit (CU) controls and guides the interpretation, flow and manipulation of all data and information. Another important function of CU is the program execution that is, carrying out all the instructions stored in the program.