Correct option is D
The correct answer is (d) ALU and CU – Perform calculations and control all computer operations
Explanation:
• CPU consists mainly of ALU and Control Unit.
• ALU performs arithmetic and logical operations.
• Control Unit directs and coordinates all activities.
• Together they manage processing and execution of instructions.
• Hence, option (d) is correct.
Information Booster:
• CPU is called the “brain of the computer”.
• Registers are also part of CPU for temporary storage.
Additional Knowledge (Incorrect Options):
• Monitor/Keyboard – Input-output devices.
• RAM/ROM – Primary memory components.
• HDD/SSD – Secondary storage devices.