Ictl - Overview Of Computer System

INFORMATION & COMMUNICATION TECHNOLOGY LITERACY (ICTL) FORM 1

Overview of Computer System

Prepared by: ROSIADI BIN TAJUDIN SMK GADONG BEAUFORT

Learning objectives

At the end of the lesson you will be able to: • Identify 5 main components in the computer system correctly. • State the functions of the 5 main components in the computer system correctly. • Explain briefly the data processing cycle of a computer system correctly.

Main Components of Computer System Monitor

Speaker Keyboard Mouse

System Unit

Main Components of Computer System

Modern Computer

Main Component : Monitor • A monitor is a computer display that is like a TV monitor. A computer monitor image is made up of pixels (dots). In general, the higher the resolution, the better the image.

CRT

LCD

Touch screen

Main Component : Keyboard • The keyboard is the main input device for text and commands. The computer keyboard uses the same key arrangement as typewriters.

PS/2

USB

Wireless

Main Component : Mouse • A mouse is an input device used to controls the movement of the cursor or pointer on a display screen. It has right click, left click, double click and scroll to function.

PS/2

USB

Wireless

Main Component : Mouse

Touch pad

Tablet pen

Main Component : System Unit • A system unit is also known as a base unit. • It is the main body of a desktop computer. • Containing the motherboard, power supply, cooling fans, internal disk drives, memory modules and expansion cards that are plugged into the motherboard.

Main Component : System Unit

Note book system unit

Desktop system unit

Main Component : Speaker • Speakers give out information in the form of sound. Computer speakers range widely in quality and price.

Variety of computer speaker

Other Computer Components: Printer • A printer is a device that produces a hard copy (permanent human readable text or graphics) of documents stored in electronic form that prints texts or illustrations on paper.

Dot matrix

Ink Jet

Laser

Other Computer Components

Microphone Scanner

Headphone Web Camera

Data Processing Cycle Data is processed by the processor. In the processing operation, data is manipulated to process or transform it into information

Input The user enters the data by using an input device

Process

Storage The storage holds data, information and programs.

Output The output devices present the processed data as useful information products to the user

Data Processing Cycle

Input

Process

Storage

Output

Conclusion • Five main components in computer system are monitor, system unit, keyboard, mouse and speaker. • To enhance the computer functionality other components can be added such as printer, scanner, headphone, microphone, web camera and etc. • Data is processed in computer system through four operations that is input, process, output and storage.

Thank you for being attentive!!! Prepared by: ROSIADI BIN TAJUDIN SMK GADONG BEAUFORT