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System Software
System software is a software which is compulsory for the computer. Without a system software, computer is just
a dummy without any use.
It is always running in the background of your device and helping the user to smoothly use the computer system.
For example: Operating systems like Windows, Mac OS, DOS, etc.
Application Software
Application software is a set of programs that helps the programmers to perform a specific task. It can be installed
on a computer or mobile device, depending on the needs of the user. For example: Word deals with documents,
Spreadsheets with calculation, Presentation software for creating and running presentations.
Utility Software
Utility software does housekeeping functions like backing up disk or scanning/cleaning viruses or arranging
information etc. They ensure the smooth functioning of the computer.
If you switch on the computer, you are using the physical parts of the computer called hardware. The set of
changes you see on your screen before it displays your login screen that your operating system is getting activated
and ready to be with you till you are using a computer. When you work on a LibreOffice document, spreadsheet,
presentation, etc. then you are using application software installed in your computer. When the system backs up
your data or checks for malware, you are using utility software.
Operating System
Operating System (OS) is a system software which is compulsory for the computer. Without an operating system, a
computer is just a machine with no usage. It works as a manager of the computer and helps you to utilise computer
hardware in an efficient manner.
Computer Games
Internet
Utilities Browsers
Operating Application
Hardware
System Software
System
Software
Databases
Some of the important functions performed by an operating system are:
• It works as an interface between the user and the machine.
User
• It works as a device manager. It keeps a track that all the devices are functioning properly
and are available to the user whenever needed.
Application
• It manages the software of the computer.
• It manages the computer memory and keeps track of the memory in use and free so that
Operating System
it is available to the user whenever needed.
• It decides which process gets the processor time for execution, when and for how much
time. Hardware
Information & Communication Technology Skills-II 73

