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    Keyboard

                  Keyboard  is  an  input  device  that  is  used  to  give

                  instructions  to  the  computer  by  typing  text  and
                  numbers. We type  letters,  numbers  and  symbols
                  using a keyboard.

                                        Mouse

                                        Mouse is an input device that sends instructions to the computer

                                        with the click of a button. It is used to draw pictures and select
                                        objects on the computer.

                  Scanner

                  Scanner is an input device that is used to copy documents or images

                  from the paper to the computer. It works like a photocopier machine.

                                           Microphone

                                           Microphone  is  an  input  device  which  is  used  to  record voice,
                                           music and sound. These recordings can be stored in the computer
                                           memory.

                  PROCESSING DEVICE

                  CPU is the processing device. It processes the input

                  according to the instructions we give and returns the output
                  through the output devices. It also manages all the work of                    CPU
                  a computer. The CPU is inside the CPU box/cabinet.                             116245 3836 975588

                                                                                                CPU      CPU Box/Cabinet
                  OUTPUT DEVICES

                  The devices through  which  we get the result or output  after processing are called

                  output devices. Let us learn about some of them.

                  Monitor

                  Monitor is an output device that looks like a television screen. It

                  is also known as Visual Display Unit or VDU. It displays all the
                  work done on a computer.

                  The front portion of the monitor is called the screen.

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