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.