Introduction of operating system
Contents:
What is Operating System
Architecture
Functionality
Operation of OS
Feature of OS
Market Share
Types of OS
Summary
2. Agenda
What is Operating System
Architecture
Functionality:
Operation of OS
Feature of OS
Market Share
Types of OS
Summary
Operating System 2
3. What is Operating System?
An operating system (OS) is a collection of software that
manages computer hardware resources.
Without a computer operating system , a computer
would be useless. The operating system acts as a
Interface between the user and computer hardware
Operating System 3
5. Operating System 5
Functionality:
In the Computer System Hardware can only understand machine code (in the form of 0 and 1) which doesn't
make any sense to a naive user.
We need a system which can act as an intermediary and manage all the processes and resources present
in the system
An Operating System can be defined as an interface between user and hardware. It is
responsible for the execution of all the processes, Resource Allocation, CPU
management, File Management and many other tasks.
The purpose of an operating system is to provide an environment in which a user can
execute programs in convenient and efficient manner.
7. Operating System 7
Operating System Features:
Protected and supervisor mode.
Allows disk access and file systems Device drivers Networking
Security.
Program Execution.
Memory management Virtual Memory Multitasking.
Handling I/O operations.
Manipulation of the file system.
Error Detection and handling.
Resource allocation.
Information and Resource Protection.
9. Types Of Operating System:
Operating System 9
Batch Operating System
Multitasking/Time Sharing OS
Multiprocessing OS
Real Time OS
Distributed OS
Network OS
Mobile OS
12. Summary
As Operating System controls and coordinates the use of
the hardware among the various applications programs for
various uses, we can say that it plays a very important role
in computer system.
Operating System 12