Function Unit (Bsic structure of Computer) in CAO
Basic functional units of a
computer.
Input Unit :-
- Computer accept information through input unit.
- The most common input device is the keyboard.
- Input take form input devices transfer it to either the memory or the processor
- Store program and data.
- Two classes of storage.
-Secondary Storage.
Arithmetic and Logic Unit (ALU) :-
- Most computer operation are executed in ALU of the processor
- Load the operands into memory
-Perform operation in ALU
-Store the result back to memory or retain in the processor.
Output Unit :-
- It is the counterpart of input unit
- It's function is to send processed result to the outside world
- Ex.printer.
- All computer operation are controlled by the control unit.
- The timing signals that govern the I/O transfer are also generated by the control unit.
- Control all activities inside the machine through a control unit.
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