The document discusses operating systems and their functions. It defines an operating system as software that enables computer hardware and software to communicate and operate together. It also coordinates activities among computer resources. The document notes that operating systems provide user interfaces, allow for single/multi-tasking and users, and perform functions like managing memory, scheduling jobs, and administering security. Key functions of operating systems include starting the computer, providing user interfaces, managing programs and memory, and establishing internet connections.

1. OPERATING SYSTEMS
 JANGID M.L.
Operating System . Jangid ML 1

2. DEFINITION
 An operating system, or OS, is a software
program that enables the computer hardware
to communicate and operate with the
computer software.
 sometimes called the platform,
coordinates all activities among computer
hardware resources
Operating System . Jangid ML 2

3. SYSTEM SOFTWARES
Systems Software: The programs that control the
operations of a computer . It consist -
 Operating system
 Linker
 Compiler
 Loader
 Driver etc.
Operating System . Jangid ML 3

4. OPERATING SYSTEM-1
 Character User Interface (CUI)
 DOS, Unix, Linux etc.
 Graphical User Interface (GUI)
 Windows-98/XP/Vista/7i , Linux
 Networking
 Windows Net, Sun Solaris
 Single Tasking :
 DOS
 Multi Tasking : An operating system that is capable
of allowing multiple software processes to run at
the same time.
 Windows, Linux
Operating System . Jangid ML 4

5. OPERATING SYSTEM-2
 Multi User: A multi-user operating system allows for
multiple users to use the same computer at the same
time and different times.
 Linux, Unix, windows 2000
 Multi-processing: An operating system capable of
supporting and utilizing more than one computer
processor
 Linux, Unix, Windows 2000
 Multi-treading : Operating systems that allow
different parts of a software program to run
concurrently.
 Linux,unix, Windows 2000
Operating System . Jangid ML 5

6. USER INTERFACE
User Interface : Controls how you communicate with the computer
1. With a Graphical User Interface 2. With a command-line
(GUI), a user interacts with icons interface, a user types all
and buttons commands.
Operating System . Jangid ML 6

7. BOOTING
Process Of Starting Or Re-starting of a Computer
 Cold Boot
Turning On Computer
That Has Been Powered
Off
 Warm Boot Restarting
Computer That Is
Powered On
Operating System . Jangid ML 7

8. Functions Of Operating Systems
1. Self Operated
2. Controlled By User
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9. Functions Of Operating Systems
1. Start the computer 2. Provide a user interface 3. Manage programs
10.
Administer
security
4.
Manage
memory-
9. Control a
network
8. Provide file
management and 7. Monitor 6. Establish an 5. Schedule jobs and
other utilities performance Internet connection configure devices
Operating System . Jangid ML 9

10. FUNCTIONS BY OPERATOR
 File making
 Folder making
 Name of file / folder
 Copy, cut, paste, move etc.
 Rename, delete, restore etc.
 Formatting
 Defragment
 Scanning etc.
Operating System . Jangid ML 10

11. Operating System . Jangid ML 11