Presentation on operating system
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Transcript of Presentation on operating system
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Name:- Nitish Xavier Tirkey
F.Y.BCA
Date:- 4th October, 2010
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Flow of presentation
Introduction
Structure of OS
Main function of Operating system
Some popular Operating system
Conclusion
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Introduction
Operating system is an integrated set of program that controls the resources of a computer system and provides its users with an interface or virtual machine that is easier to use than the bare machine
Operating System is a software, which makes a computer to actually work.
It is the software the enables all the programs we use.
OS acts as an interface between the application programs and the machine hardware.
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Structure of OS
The two primary objectives of an operating system are:
(1). Make a computer system easier to use:- An operating system hides details of hardware resources from programmers and other users and provides them with a convenient interface for using a computer system.
(2). Manage the resources of a computer system:- An operating system manages all the resources of a computer system. Efficient and fair sharing of system resources among users and/or programs is a key goal of all operating systems.
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Structure of OS
Users
Other system
Operating System
Computer Hardware
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Main function of Operating system
A separate module of operating system software performs each of the function:
(1).Process management:- Process management module takes care of creation and deletion of processes, and providing mechanisms for synchronization and communication among processes.
(2). Memory management:- Memory management module takes care of allocation and de-allocation of memory space to programs in need of this resources.
(3). File management:- It takes care of file-related activities such as organization storage, retrieval, naming, sharing, and protection of files.
(Contd..)
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Main function of Operating system
(4). Security:- Security module protects the resources and information of a computer system against destruction and unauthorized access.
(5). Command interpretation:- Command interpretation module takes care of interpreting user commands, and directing system resources to process the commands.
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Some popular Operating system
Operating System can also be classified as:-
(1). Single User Systems:-They are popularly associated with Desk Top operating system which run on standalone systems where no user accounts are required.
Example: DOS.
(2). Multi User Systems:-Provides regulated access for a number of users by maintaining a database of known users. Refers to computer systems that support two or more simultaneous users.Example: Unix, Microsoft Windows NT.
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Conclusion
Without Operating system the computers cannot run the application and we cannot do work in the computer.
Therefore Operating system is very important in computer.
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Thank you