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The Hardware devices are classified into four categories:

                                                             HARDWARE




                    Input Devices          Processing Device           Output Devices           Storage Devices


                  INPUT DEVICES


                  The hardware devices that are used to give inputs in the form of words, pictures,
                  sounds, etc., to a computer are called input devices. Some of the most commonly
                  used input devices are:

                  Keyboard: A keyboard is an input device used to

                  give input  to  the computer  by  typing  numbers,
                  letters and special characters.                                               Keyboard




                                 The invention of Qwerty keyboard


                               Mouse: A mouse is an input device. We can send instructions to the

                               computer by clicking on its buttons. It is also used to select objects and
                               draw pictures on the screen.


                   Mouse

                  Joystick: A joystick is an input device used for playing games.



                                                                                                           Joystick
                                   Webcam: A webcam is an input device used to capture

                                   pictures or videos in digital form.

                    Webcam

                  Microphone: A microphone is an input device used to record voice,
                  music and other sounds on a computer.

                                                                                                         Microphone
                                       Light pen: A light pen is an input device used

                                       to point or draw on the screen.
                      Light Pen


                  Scanner: A scanner is an input device that reads text or images
                  and sends their copies to the computer.
                                                                                                       Scanner


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