Page 24 - iPlus_Ver_2.0_class_5
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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.

                  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.

                  Application software can be broadly classified into two categories:

                                                          Application Software




                                General Purpose Software                                      Customised Software



                        Word             Presentation          Desktop Publishing              Multimedia
                      Processors           Software              (DTP) Software                Processors
                              Spreadsheets     Database Management             Image Processing
                                                  Systems (DBMS)                   Software




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