Output Devices

Any device that is capable of representing informationin a computer is called output device.There are three important output devices connected to the system unit.
 §      Monitor §      Printer
 §      Speakers



Monitor
A monitor resembles a television screen, only with a much higher resolution for better display quality. It is used to display information from the computer. The monitor display text grephics. It typically comes with its own separate power button to turn it on or off.
Printer
A printer is used to transfer data from a computer onto paper. There are colour printers well as grayscale printers available on the market. The fdifferent types of printers are dot matrix printers, inkjet printers and laser printers.
Speakers
Speakers are used to play sound. They may be built in or externally connected to your system. Speakers allow you listen to music and hear sound effects spoken text using your computer. Suppose you want to give a lesson to a group a visually impaired students, you can multimedia presentation. To make the lesson more accessible to these students, you can structure the lesson around an audio componet, thus allowing the students to participate in the lesson using sound rather than relying on the screen presentation.