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    Data Compression Program

                      It is used to compress a large file into a file of smaller

                      size and can be transferred from one computer to
                      another so that it occupies less space and is easy
                      to store. Winzip and Winrar are examples of this                      Winzip             Winrar

                      software.
                      Device Driver

                      A device driver is a small software that helps the computer talk to devices like
                      printer, keyboard, mouse or speakers. It works like a helper that turns computer
                      instructions into simple actions the device can understand and follow easily every.

                      If there is no device driver, the computer may not find the device and it will not
                      work properly at. When we connect a new device, we often need to install its driver
                      so the computer can use it correctly. For example, a printer uses a device driver to

                      understand print commands and make printed pages for us every time.
                      Disk Defragmenter

                      The memory of a computer is divided into small blocks. The files are stored in
                      continuous  blocks  of  space  on  the  hard  disk.  When  a  file  is  deleted  from  the
                      computer, a part of that space becomes free. When a new file is saved on the
                      computer, some part of it is saved on the

                      first available free space in the memory.
                      After some time, the files get stored in

                      various fragments which slows down
                      the  speed  of the computer.  The  Disk
                      defragmenter organises the fragments
                      of files into continuous blocks to improve            Fragmented Disk           Defragmented Disk

                      the performance of the computer.
                      Antivirus Software

                      To detect and  remove a virus from a computer
                      system, you need software called an antivirus. It is
                      used to scan the computer for viruses among files

                      and folders. It scans the disk each time you insert
                      it into a computer  or  whenever  the computer  is
                      booted. Quick Heal, Norton, etc., are examples of
                                                                                            Quick Heal          Norton
                      antivirus software.

                     24     Premium Edition-V

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