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02: Computer System Organisation
- #6What are the functional units of a computer?Ans : The functional units of a computer are as follows:
1. Input Unit Computer takes data from input devices.
2. CPU (Central Processing Unit) It is the brain of the computer, where most of the calculations takes place.
It consists of
ALU (Arithmetic and Logic Unit) It performs arithmetical and logical operations.
CU (Control Unit) It extracts instructions from memory, decodes and executes them.
3. Output Unit Gives out results or data through output devices.
4. Auxiliary Storage Secondary storage devices are used to store data and instructions permanently.