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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 antivirus software.
APPLICATION SOFTWARE
It is a program designed to help users perform specific tasks. These tasks can be
personal, educational, business-related, etc. Generally, people refer to application
software as 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
General Purpose Software
General purpose software are those which have not been developed according to
the needs of a particular organisation or a particular industry. It can be used for both
commercial and non-commercial purposes. The general purpose software can further
be classified into seven different groups on the basis of their use. These are:
Word Processors
Word Processors are used to create, edit, format and print text documents. They are
commonly used in businesses, schools and at home. Microsoft Word is the most
commonly used word processor. Some other word processors are WordPerfect,
Writer and Kword.
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