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Computer Hardware


                  The parts of a computer that we can see and touch are called Hardware. All input,

                  processing, output and storage devices form the hardware components of a computer
                  system. The hardware components are divided into four groups.

           Prime (Ver. 2.2)-III       Devices         Processing        Devices           Storage
                                                              Hardware





                                                                         Output
                                       Input
                                                        Devices
                                                                                          Devices

                   Input Devices


          14      The devices that help us to enter data into the computer and give orders to the

                  computer are called input devices. Some of the input devices are keyboard, mouse,
                  scanner, joystick, touchscreen, microphone, web camera, light pen, etc.


                   Keyboard


                  A keyboard is used to give input to the computer by

                  typing numbers, letters and special characters.


                                            Mouse


                                          A mouse is used to send instructions to the computer with the
                                          click of a button. It is also used to draw pictures and select

                                          objects in the computer. It is also called a pointing device.


                    Scanner


                  A scanner is used to read papers, documents, images or pictures
                  and send them as input into the computer.



                                      Joystick


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