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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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