1. Lesson 3 Output Devices By the end of this lesson, learners should be able to: List and describe how these output devices work - monitors, printers, speakers and earphones

2. Output Devices Output devices, such as computer monitors, deliver information to the user. Speakers, earphones, and printers are also output devices. They allow you to hear sound and print pages, respectively. Output devices are also called peripherals.

3. Printers There are three main types of printers: Dot matrix Ink jet (or desk jet) laser printer

4. Monitors The monitor works with a video card, located inside the computer case, to allow you to see images and text on the screen. Monitors come in different sizes, including 15, 17, 19 and 21-inch. Most new computers come with a monitor the size of a small TV. However, you can buy a less bulky but more expensive flat panel monitor. Your monitor has an on/off button and control buttons (visible or behind a small panel) that allow you to change your monitor's display.

5. Speakers and Earphones Speakers are devices that connect to a computer and make sound and music audible. Speakers often come in sets of two or may be built into a computer monitor. Earphones are output devices. Plug earphones into your speaker, monitor, or case to listen to music, movie clips and other media.

6. Modems Modem Plays Dual Role The modem, used for input and output, lets you communicate with other computers through phone lines. 56K modems are the fastest type of modem you can use on a standard phone line. Computer users who want more speed may replace a dial-up modem with a cable Internet connection or DSL Internet connection. A cable modem allows you to connect your computer to a local cable television line and is about 26 times faster than a standard 56K phone modem. It is nearly equal to the data rate available to a DSL subscriber.