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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.

                                                                                                         IPO Devices   61

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