2. COMPUTER SYSTEM CAN BE DIVIDED INTO : 1- General Computer 2- Special Computer

3. GENERAL COMPUTER CAN BE CLASSIFIED INTO TWO PARTS: Software Hardware Software include: Operating System Language Programming Application programmers

4. Is a program that manages the computer hardware it also provide a basis for application programs and it is act as an intermediary between a user and hardware Such as: Windows Linux OPERATING SYSTEM

5. HARDWARE INCLUDE: 1-Case Case contain the following items: A- CPU (Central Process Unit)

6. B - Mother board C - Main Memory RAM ROM

7. D- SECONDARY MEMORY Hard Disk Drive CD-ROM OR DVD Drive Floppy Disk Drive Flash Disk

8. 2- INPUT DEVICES Mouse Keyboard Scanner

9. 3- OUTPUT DEVICES Monitor (CRT &TFT-LCD) Speakers Printer

10. HOMEWORK 1- What is the difference in physical components between laptop and desktop computers. 2- What do think that, Windows 7 or Windows XP is better regarding to security, fasting and strong? Why?