MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A control unit, or CU, is circuitry within a computer’s processor that directs operations. It instructs the memory, logic unit, and both output and input devices of the computer on how to respond to the program’s instructions. CPUs and GPUs are examples of devices that use control units.

Detailed explanation-2: -The control unit sends out a memory read signal, and the contents of the address 0000 are copied through the data bus to the memory data register (MDR). As the data fetched during the fetch stage is an instruction, it is copied into the instruction register (IR).

Detailed explanation-3: -The Central Processing Unit (CPU) is also known as the microprocessor or processor. The processor contains three sections called the Arithmetic Logic Unit (ALU), the Control Unit and Registers. Control unit: The Control Unit makes decisions and sends the appropriate signal down its lines to other parts of the computer.