Computer input devices
INPUT DEVICES
DEFINITION OF INPUT DEVICES::
The foremost task of a computer is to accept data. An input device is used to accomplish this task. An input device is used to enter the data and instructions into the computer.
INPUT DEVICES EXAMPLES
Keyboard: Keyboard is the most popular input device that allows users to type alphabets, numbers, and operators, and also to control the cursor on the screen.
Mouse: Mouse is a pointing device that allows user to point to a specific position on the screen. It has two or three buttons on top for selecting/executing different operations.
Microphone: It is a device used to accept audio inputs from the user.
Scanner: It is a device used to capture digital images of printed documents, graphics or other printed media.
Touch Screens: It is a display device, which is touch-sensitive and allows user to interact with the computer system by touching an area on the screen.
Bar Code Reader: It is used to accept bar code inputs. A bar code is a series of vertical bars representing numbers and alphabets printed on product labels.
Joy Stick: It is a device used to control cursor on screen. Normally it is used in Games and specially designed simulation software.
Light Pen: It is a device used for drawing pictures and for directly controlling screen operations.
Web Camera: It is an easy to connect lower solution digital camera normally employed for transfer of images on the web-based conferencing.
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