(3) Draw and explain the block the block diagram of a computer.

Ans: (1)    Input device : A device through which data is entered is called an input device.
(2)    Central Processing Unit(CPU): It is made up of three parts:
(a)    ALU (Arithmetic and Logic Unit): All the arithmetic operations and logical operations are done here.
(b)   CU (Control Unit) : This unit regulates and manages the whole computer system.
(c)    Memory Unit: The information is temporarily stored in this unit.

(3)    Output device : The processed data is displayed on an output device.

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