1. Prepared by : Cikgu Dk. Noor Afizah

2. Introduction
•How do we communicate to
the computer ?
•How the computer
communicate to us?

3. Introduction
Computer use output devices to
present information.
Examples :
• Monitor
• Speaker
• Printer

4. Monitor
• Function : To display screen of a computer
Monitor Screen
• Screen resolution : refer to the number of pixel
that can be displayed on the screen.
• High resolution monitor : Quality of the picture is
good because of the high number of pixels.
Do you know what are
the difference between
CRT Monitor and
LCD Monitor?

5. Difference between CRT Monitor and
LCD Monitor
CRT Monitor
• Cheapest
• Large
• bulky size
• Noisy
• Heavy
• Generate a lot of heat
LCD Monitor
• Expensive than CRT
• Flatter
• Less bulky
• Highly quality display
• Lighter
• Consumes less
electricity

6. Speaker
Function : To project sounds from the computer.

7. Printer
• Function : to create a printed copy of the computer.
• Printer resolution : refer to how closely the printer can
prints dots.
• Measured in dpi ( dots per inch )

8. Difference between 3 Printer
• Bulky
• Cheap
• Low draft Quality
• Lighter
• Expensive
• Near letter
Quality
• Expensive
• Heavy
• Letter quality