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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.
23
Types of Software

