Which of the following is main function of CPU in computer system ?

Correct option is D

The main function of the CPU (Central Processing Unit) in a computer system is processing data.

Information Booster:

1. The CPU is often referred to as the "brain of the computer".
2. It performs three primary operations: fetching data, processing data, and executing instructions.
3. The CPU includes:
   • ALU (Arithmetic Logic Unit): Performs mathematical and logical operations.
   • CU (Control Unit): Directs the flow of data and instructions.
4. It processes data from input devices and sends results to output devices.
5. CPUs follow the machine cycle: Fetch → Decode → Execute → Store.

Additional Knowledge:

• Option (a) Storing data: Data storage is managed by memory (RAM/ROM), not the CPU.
• Option (b) Programming computer: Programming is done by humans or software developers, not a CPU function.
• Option (c) Transferring data to an output device: This is a task performed by the Input/Output devices, not primarily by the CPU.

Key Points to Increase Knowledge:

1. The speed of a CPU is measured in GHz (Gigahertz).
2. Modern CPUs have multiple cores for multitasking.
3. Companies like Intel and AMD are leading manufacturers of CPUs.