Computers are changing our lives.

In this digital world, having the knowledge and skills in computer servicing is the start and most fundamental of all.

A computer is a mechanical machine that processes information.

The computer system is a collection of entities like hardware, software and electricity.

Hardware refers to the physical and tangible computer equipment.

Output device accepts data and instructions from the user.

Microphone is one of the output devices of the computer.

A projector is an input device.

The system unit is the main part of a desktop computer.

CPU is an acronym for Central Processing Unit.