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Output Devices

                  The devices which help us to get the results are called output devices. Some of the commonly
                  used output devices are monitor, printer, headphones and speakers.












                            Monitor             Printer          Headphones                 Speakers
                  Now you know that a computer works on the IPO cycle. To follow this IPO cycle it uses some
                  devices. Let us know about them in this chapter.



                         INPUT DEVICES


                  The devices  that  are used  to  give commands  or instructions  to  the computer
                  or tell the computer what to do are called input devices. Let us study about some of them.


                       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 for selecting objects on the

                  computer.


                                             Scanner

                                        Scanner is an input device that is used to send document or images from the
                                        paper to the computer. It works like a photocopier machine.







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