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.
