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Monday, January 21, 2019
BTM Unit 3
System Software: The Power behind the Power
•Application software is software that has been developed to solve a particular problem for
users—to perform useful work on specific tasks or to provide entertainment.
• System software runs at the most basic level of your computer and enables the application
software to interact with the computer and helps the computer to manage its internal and external
resources, as well as manage the hardware.
There are three basic components of system software :
Operating systems: An operating system is the principal component of system software in any
computing system.
Device drivers: Device drivers help the computer control peripheral devices.
Utility programs: Utility programs are generally used to support, enhance, or expand existing
programs in a computer system.
The operating system (OS) consists of the low-level, master system of programs that manage the
basic operations of the computer. • Every general-purpose computer must have OS to run other
programs. • OS allows users to concentrate on applications rather than on complexities of the
computer. • Each application program is written to run on top of a particular OS. • The OS
manages: • Booting • CPU management • File management • Task management • Security
