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    PROLOGUE

                     School reopened for new session. Gowri and Aryan were happy to be back to school. They were
                     excited to share their learning during the break after final exams.

                                          Gowri: Do you know we will have computer classes in class 3 for
                                          two periods each week?

                                          Aryan: Yes, I am so thrilled. Online classes have taught us so
                                          much  and  thanks  to  technology  we  didn’t  miss  on  our  learning
                                          during the pandemic.

                                          Gowri: Yes, But do you know that we can do so much on computers
                                          apart from just attending online classes. Like music, calculation,
                                          drawing and making projects/assignments. I have learnt so much
                                          about these things.

                          Aryan: Is it? Will you share your learning with me?
                          Gowri: Why not. I would love to share. Before that let

                          me tell you little about computers. As you know, now
                          a  days  computer  is  used  in  almost  all  the  fields  like
                          Home,  Education,  Government,  Hospital,  Hotels,  and
                          Games  etc.  But  what  is  a  computer?  Computer  is  an
                          Electronic  Device  which  takes  raw  data  as  an  input,

                          processes it and gives us the desired output. It is a
                          collection of Hardware, Software. Before we proceed
                          let me show you how to switch on the computer.

                     STARTING AND SHUTTING DOWN OF COMPUTER SYSTEM

                     How to Start a Computer System?

                          Step 1               Step 2                   Step 3                       Step 4

                      Switch on the  If you have UPS,             Locate the power          Press power button on
                      power supply.         switch it on.        button on CPU and          monitor to switch it on.

                                                                   press it softly.

                                                                                         Prologue                        9

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