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    Input Devices

                     The devices that are used to enter data into the computer and give instructions are called
                     input devices. Some input devices are keyboard and mouse. Now, let us learn about more

                     input devices.

                     Keyboard

                     A keyboard has many buttons that help you type letters, numbers,
                     symbols and execute various commands.

                                   Mouse
                                   A mouse is a pointing device which allows user to select or point on the screen.

                     Scanner

                     A scanner is used to read paper documents, images or pictures and send them
                     as input to the computer. It converts hard copy into soft copy. A scanner can

                     be connected to a computer using a USB cable.

                                   Joystick

                                   A joystick is used to play games on a computer. It helps control the different
                                   movements or actions in the game.

                     Microphone

                     A microphone is used to record voice, music and sounds that can be stored on a
                     computer.

                                      Web Camera

                                      A web camera is used to take pictures in digital form and store photographs in

                                      the computer.  It is also known  as webcam. It is commonly used for video
                                      conferencing.
                     Light Pen

                     A light pen is used to point to objects or draw on the screen in a way like a

                     touch screen. It is used to draw text and diagrams on the monitor.

                                       If CPU is the brain of a computer, then which computer hardware is its ear?

                                                                                    Computer Hardware and Software     11

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