1. 2.
Computer part & component
2.1 Overview of the computer system

2. Learning Outcome
• Identify main components in the computer system :
– Monitor
– Keyboard
– Speaker
– Mouse
– System unit
– Printer
• State the functions of the main components in the computer system

3. MONITOR
•computer display that is like a TV monitor
•computer monitor image is made up of pixels (dots)
Standard Liquid Crystal
television set Display (LCD)
An ordinary These screens
home television are made up of
that can be two glass
used for Standard plates with
computer computer liquid in
output monitor between
Better resolution
than TV monitors

4. KEYBOARD
MULTIMEDIA KEYBOARD WIRELESS KEYBOARD
•The keyboard is the main input device for text and
commands.
•The computer keyboard uses the same key
arrangement as typewriters.
•It also contain standard function keys, such as the
escape, cursor movement and control keys.

5. •Keyboards come with three (3) different types of port
such as:
SERIAL PORT
PS/2 PORT
USB PORT

6. SPEAKER
•Speakers give out information in the form of sound.
•Computer speakers range widely in quality and price.
•Computer speakers are typically packaged with
computer systems in small plastic boxes with
mediocre sound quality.
SYSTEM UNIT
•also known as a base unit
•the main body of a desktop computer

7. MOUSE
•an input device used to controls the movement of
the cursor or pointer on a display screen
•It has right click, left click and double click to
function

8. PRINTER
•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 printer Ink-Jet printer Laser printer
low-cost printer that low-cost printer that uses a laser beam
produces low quality produces a mid- to produce the
output quality output best quality output
works like an automatic most economical for speed of a laser
typewriter color output printer is typically about
can also be used when 8 ppm (page per
carbon copies of a minute).
document are required