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

Memory Unit :-

• Store program and data.
• Two classes of storage.

                -Primary Storage
                -Secondary Storage. 
  
Arithmetic and Logic Unit (ALU) :-

• Most computer operation are executed in ALU of the processor
• Load the operands into memory

                - Bring them to the processor.
                -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.  

Control Unit :-

• 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.