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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 in 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 that 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. Fragmented Disk Defragmented Disk
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 these
Antivirus software.
Clickipedia
Booting is a process that loads the operating system and prepares the system for use.
APPLICATION SOFTWARE
It is a program designed to help users perform specific tasks. It is designed to be used by
end-users. 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 particular industry. They can be used both for commercial and
non-commercial purposes. The general purpose software can further be classified into seven
different groups on the basis of their use. They are:
Types of Software 9

