Which of the following components is NOT part of the CPU?

Correct option is A

The correct answer is (a) Hard Disk Drive (HDD)

• The Hard Disk Drive (HDD) is a storage device used to store data permanently. It is not a part of the Central Processing Unit (CPU), which is responsible for processing data and executing instructions.

• The CPU consists of the following components:

  • Cache memory: A small, high-speed storage area that stores frequently used data for quick access.

  • Arithmetic Logic Unit (ALU): Responsible for performing arithmetic and logical operations.

  • Control Unit (CU): Directs the operations of the processor by interpreting and executing instructions.

Information Booster:
• Hard Disk Drive (HDD): Used for long-term data storage, it is an external storage device and is not part of the CPU.
• Cache Memory: Often integrated into the CPU, this high-speed memory helps improve processing speed by temporarily storing data that is frequently used by the CPU.
• ALU: Performs all mathematical calculations (addition, subtraction, etc.) and logical operations (AND, OR, NOT).
• Control Unit (CU): The CU coordinates the activities of the CPU by fetching, decoding, and executing instructions from memory.