Page 12 - Trackpad v5 class 3
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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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