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IPO Cycle
A computer works on the IPO (Input-Process-Output) cycle.
INPUT PROCESS OUTPUT
3, 6, + 3 + 6 9
Data Information
Keyboard CPU Monitor
Input
The data and instructions we give to the computer are called Input. The device
that is used to send input to a computer is an input device.
Process
The computer works on the data entered by the user. It converts the data into
meaningful information with the help of the processor which is CPU (Central
Processing Unit). This conversion of data into information is called processing.
Output
The result we get after processing the data and instructions is called output. The
output displayed on the screen of a monitor is called soft copy. A printout of the
soft copy on paper is called hard copy.
TYPES OF COMPUTERS
All types of computers have a CPU, keyboard, and a screen to display the output.
But they differ in their size, shape cost and speed. Let us learn more about them.
Microcomputers
These computers are made to be used by one person at a time. Desktops, laptops,
tablets, and smartphones are called Microcomputers. They are also called Personal
Computers (PCs).
A Computer System 13

