Input devicesKeyboard

One of the main input devices used on a computer, a PC's keyboard looks very similar to the keyboards of electric typewriters, with some additional keys

. Below is a graphic of the Gamers' keyboard with indicators pointing. Keyboard is use for typing, playing games and typing numbers.

A webcam is a video capture device connected to a computer or

computer network, often using a USB port or, if connected to a network, Ethenic or WI-FI.

The most popular use is for Video telephony, permitting a computer to act as a video phone or video conferencing station. This can be used in messenger programs such as Windows Live Messenger, Skype and Yahoo messenger

services.

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Output devices

• printer is a peripheral which produces a hard copy (permanent readable text and/or graphics) of documents stored in electronic form, usually on physical print media such as paper or transparencies.

• A loudspeakeris an electro acoustic transducer that converts an electrical signal into sound. The speaker moves in accordance with the variations of an electrical signal and causes sound waves to propagate through a medium such as air or water.