1.2 & 1.3 The Computer System (Electronic system)

System is a group of components designed for a particular job.

It consists of 4 components :

1. System unit ; 2. Keyboard; 3. Monitor & 4. Printer.

1. System Unit divided into two parts: 1.Motherboard 2.Storage device.

2. Keyboard for entering data into the computer.

3. Monitor - displays data in the form of rows & columns.

• Soft copy - The data displayed in a screen

4. Printer It gives printed output on paper.

• Hard copy - The printed output

HARDWARE is a computer equipment.

Cheap. Can see. Can touch when you look at a computer.

E.g. printer, keyboard, monitor, mouse, scanner, plotter and etc.

SOFTWARE is a computer program.

Costly. Can see once it is printed. Can not touch.

E.g. Microsoft Word, Microsoft Excel, Print Master and etc.

1.3. Computer System Electrical Connections

Booting - starting the system.

Normal procedure:

1) Switch on all the peripherals;

2) The system unit;

3) The monitor.