Introduction to computer

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Presentation transcript:

Introduction to computer (Part 1)

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

Activity 1 What is the computer?

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

Computer History In 500BC Chinese Found ABACUS

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

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

Computer Hardware System Unit Monitor CPU Mouse Hard Disk Keyboard

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

System Unit

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

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

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

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.

Other hardware Speaker Joystick Wireless Presenter Headset

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

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

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

Operating System Windows 8 Windows 7 Apple Macintosh

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

Questions & Answers Q A