Question

What is the function of the control unit in the CPU?

• A. To transfer data to primary storage
• B. To store program instructions
• C. To control the sequence of operations
• D. To decode program instructions

Answer 1

Answer:

C. To control the sequence of operations

A control unit (CU) is an integrated circuit in a processor that controls the input and output. It receives instructions from a program, then passes them to the Arithmetic Logic Unit (ALU). ​This unit enables the sequential flow of data between the different parts of the Central Processing Unit. It can interpret the instructions and perform the necessary actions. This handles multiple operations like fetching, decoding, and execution of instructions. It controls the flow of data inside the process. This also controls the execution units like ALU, registers, and data buffers that are present in the CPU.