System is a collection of programs which control the overall functions of which control the overall functions of computer. An operating system is a program that acts as an interface between the user of a computer and the computer hardware. The purpose of operating system is to provide an environment in which a user can execute programs in a efficient manner. Operating system also acts as a platform on which various application programs such as word processor and excel are executed.

1. Functions of Operating
System

2. INTRODUCTION
 System is a collection of programs which control the
overall functions of which control the overall functions of
computer.
 An operating system is a program that acts as an interface
between the user of a computer and the computer
hardware. The purpose of operating system is to provide
an environment in which a user can execute programs in a
efficient manner. Operating system also acts as a platform
on which various application programs such as word
processor and excel are executed.

3. Functions of operating System:-
 Process Management.
 Resource Management.
 File Management.
 Communication Management.
 Security Management.
 Memory Management.
 Device Controlling.

4. Process Management
 All process from start to shut down.Open,
Save, Install, Copy, Print.
 CPU can perform one task at one time. if
there are many tasks, operating system
decides which task should get the CPU.

5. Resource Management
Installing drivers required for input,
communication output, memory,
power, communication devices.

6. File Management
 Name
 Folders.
 Location.
 Attributes – size, type, modified,
protection, password etc.

7. Communication Management.
Downloading-Uploading.
One computer to other computer
in One computer to other
computer in LAN/WAN.

8. Security Management.
 Virus management.
 Alert messages.
 Dialogue boxes.
 Firewall.
 Passwords./ Access protection

9. Memory Management
 It is also an important function of operating
system. The memory cannot be managed without
operating system. If there is no operating system,
the programs may mix with each other. The
system will not work properly.
 Primary RAM-ROM.
 Secondary – Hard Disc, CD, DVD, Pen Drive etc.

10. Device Controlling
Operating system also controls all
devices attached to computer. The
hardware devices are controlled with
the help of small software called
device drivers.

11. THANK YOU