1. Introduction to computer
(Part 1)

2. Objectives Computer definition Computer History
Understand the computer peripheral
Understand the basic information processing of computers

3. Activity 1
What is the computer?

4. Definition
Computer is an electronic device that manipulate information, or data. It has the ability to store, retrieve, and process data.
Type Document
Send
Manipulate : រៀបចំ
Play games
Access Internet

5. Computer History
In 500BC Chinese Found ABACUS

6. Computer History ENIAC (Electronic Numerical Integrator And Computer):
Was built for the United State military
Introduced in February 1946 and used until October 1955
Weighed more than 30 tons
Consumed 175kw of power

7. Computer peripheral Computer need hardware and software to function.
Hardware is actually physical computer machinery which you can touch and feel.
Ex: Mouse, Printer, Keyboard, Monitor ….
Software is any set of instructions that tells the hardware what to do and how to do it.
Ex: Microsoft Office (word, excel ..), Windows 7

8. Computer Hardware
System Unit
Monitor
CPU
Mouse
Hard Disk
Keyboard

9. Monitor
Is a device connected to a computer that displays information on a screen.
CRT (Cathode Ray Tube)
LCD (Liquid Crystal Displays)

10. System Unit

11. Keyboard
Is a keypad device with buttons or keys that a user presses to enter data characters and commands into a computer.

12. Mouse There are Three Type of Mouse: Mouse Wireless Mouse Ball
Mouse Optical

13. Printer
A computer peripheral that puts text or a computer-generated image on paper or on another medium, such as a transparency.
DeskJet Printer
Laser Printer

14. Scanner A device for examining an object in detail in order to
produce an electronic image of it. It uses visible light
such as a laser.

15. Other hardware
Speaker
Joystick
Wireless Presenter
Headset

16. List all software that you used to know!
Activity 2
Activity
List all software that you used to know!

17. Computer Software
Application software is a program or group of programs designed for end users.

18. Computer Software
Operating System is a program that allow hardware and application can processing on computer

19. Operating System
Windows 8
Windows 7
Apple Macintosh

20. Type of Devices Divided into Four Part Input Device Process Device
Output Device
Storage Device

21. Questions & Answers Q A