The document discusses different computer output devices and how they communicate information to users. It covers monitors, speakers, and printers, describing their functions and key differences. For monitors, it compares CRT and LCD monitors. For printers, it distinguishes between low draft quality, near letter quality, and letter quality printers based on resolution, cost, size, and quality. It concludes with an activity for students to research and present information on additional output devices like plotters, projectors, and microfilm.

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

9. Group Discussion ( 20 minutes ) Make a group into three . Use google search to find picture and function of Plotter Projector Computer output on Microfilm Put your information into Microsoft PowerPoint Present your finding to teacher and your friends.