•Software can be
divided into TWO types:
-Application Software
-System Software
•System Software is
used to control and maintain the operations of computer and its devices
•SS provide User
Interface between Application and Computer’s hardware
OPERATING SYSTEM
A set of programs containing
instructions that work together to coordinate all the activities among computer
hardware resources.
THE USES OF OPERATING SYSTEM
Functions of Operating Systems:
1)Start and shut-down
computer
2)Providing user
interface
3)Managing program
4)Managing memory
5)Coordinate tasks
6)Configuring devices
7)Monitor performances
8)Establish an Internet
connection
CATEGORIES OF OPERATING SYSTEM
Stand-alone
-It is used mostly in Personal Computer
-Example: Windows 7, Linux, Ubuntu
Server
-Is specifically designed to support network
-Example: Windows Server 2008, UNIX, Solaris
Embedded
-Operating system on mobile devices
-Example: iOS, Blackberry,
Android
UTILITIES
A type of system software. Its allow user to
perform maintenance-type tasks. Usually related to managing a computer, its
devices or its programs.
UTILITIES FUNCTION
Utility provides functions:
1)Managing files
2)Install / uninstall
programs
3)Defragmenting disks /
cleaning up disk
4)Setting up screen
savers
5)Burning CD
6)Protecting against
viruses
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