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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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