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What are the basic units of computer? Give names of three sub-units of CPU and also give the functions of each unit.
Answer:
The basic units of computer are:
- Input unit
- Output unit
- CPU
- Memory unit
The 3 sub units of CPU and their functions are:
- Control Unit - controls sequential instruction execution, interprets instructions and guides data flow through the computer’s memory, ALU and input or output devices.
- Arithmetic Logic Unit (ALU) - performs all the arithmetic and logic operations that need to be done as per the instruction in a program.
- Registers - CPU uses registers to temporarily hold processing information when the processing is going on.
