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You have learnt about them in the previous class. Look at the storage devices.












                     Hard disk              CD                DVD                Pen drive           Memory card
                  Need for Storing Work on a Computer


                  When your teacher teaches you something, you keep it in your
                  brain and recall it when required. But you may forget it sometimes.
                  But if you note it down in your notebook, you can revise it later,
                  again and again. So whatever you have learnt remains forever.

                  In the same way, when you work on your computer and if the
                  electricity goes off, you will lose all your work. And when you
                  restart your computer, you will not be able to open the same
                  work again. But if you save it on any of the storage devices, you
                  can open your work again. Storing work on a computer on any
                  storage device is called saving.
                  Suppose you are drawing a ‘Rainy scene’ in Paint. You
                  have finished half of it and your computer period is
                  over. You want to save it and continue the rest of it

                  in the next period. What will you do? You will save it.






                    Many years ago, people used a storage device called Floppy

                    Disk. It is not used nowadays. The save icon you see in almost
                    all software is actually an image of a floppy disk.



                      WHAT IS A FILE?

                  When you write something in a notebook or draw

                  something in your drawing book, your notebook
                  and drawing book are like files.
                  When you work on a computer in any software and

                  save it, it gets saved in the form of a file on the hard
                                                                                                          Paint File
                  disk. A file in a computer is a piece of information
                  stored on a storage device.




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