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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 the performance of
                 the computer.

                 Disk Cleanup

                 Disk Cleanup  is a  utility that  helps free  up  space on  your  hard  drive  by  removing
                 unnecessary files. These can include temporary files, system cache and files from the
                 Recycle Bin. By getting rid of these unneeded files, Disk Cleanup can help improve your
                 computer’s performance.


                 Virus Scanner
                 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. It is also called antivirus
                 software.  Quick Heal,  Norton,  etc.  are  examples of this
                 software.


                                                                                             #Digital Literacy
                       Let’s CatCh Up


                   Answer in one or two words:
                   1.   Which utility software can be used to compress some files
                       on your system?                                                         __________________

                   2.   Which software is used to scan a computer for viruses among
                       files and folders?                                                      __________________





                  i +  APPLICATION SOFTWARE
                 The software that are designed to perform some specific type of jobs on a computer
                 are  called  Application software.  Paint,  Tux Paint and  Windows  Media Player are

                 examples of application software.









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                                                                                              Types of Software
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