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Thursday, January 26, 2012

Different Functions Of Operating Systems

Operating systems are an important type of system software. They provide a lot of facilities to the users.
State different functions of operating systems
State different functions of operating systems

Following are the main functions performed by Operating System:
Explain Different Functions of Operating System

Explain Different Functions of Operating System

1. Process Management

CPU can perform one task at one time. If there are many tasks, operating system decides which task should get the CPU first. Operating system also maintains a queue of jobs for processing one by one.

2. Main Memory Management

Operating system manages memory (RAM)for many running programs. It allocates memory area to different programs. It de-allocates the memory area when a program is terminated. It also manages efficient use of RAM during processing.

3. Secondary Storage Management

Operating system manages secondary storage. It manages the stored files and folders on disk in a proper way.
You can create and save files and folders, edit files, copy files, move files from one location to another within one computer or from computer to computer, and delete files and folders etc, with the help oif operating system.

4. I/O System management

It manages Input/output operations. It controls I/O devices like mouse, keyboard, monitor and printer etc.

5. File Management

It manages files, for example:
  • creation of files
  • deletion of files
  • copying of files.
  • editing files
  • moving of files etc.

6. Protection System

There are many processes of different users in memory at a time. So operating system provides protection so that no process can interfere with another process activity. Operating system makes sure that each and every process performs within its own boundaries.

7. Networking

Operating system provides access to shared resources by networking system. Users can share files and hardware resources like printer.

8. Command Interpreter system

Operating system provides command interpreter for reading and executing user commands. For example, Microsoft Windows XP provides Command Prompt to enter and execute commands.

9. Booting

Operating system starts the computer. It checks the computer and makes it ready to work.

10. Loading and Execution

Operating system provides the facility to load programs in memory easily and then execute it.

11. Data Security

Operating system protects the data stored on the computer from illegal use, modification or deletion.

12 Device Controlling

Operating system controls all devices attached to computer with the help of device drivers. Device driver is a software that permits a computer system to communicate with a device. e.g., device driver software for a modem comes with it on CD. We have to install device driver before using a device.

13. Printing Controlling

Operating System also manages and controls printing function. If a user issues two or more print commands at a time, it manages print queue for printing each document one by one in a proper sequence.

14. Providing User Interface

Operating system provides User interface to interact with the computer. User Interface may be Graphical user interface (GUI) or Command line interface. For example, Microsoft Windows XP provides an easy to use graphical user interface called GUI. Whereas DOS provides a Command Line Interface called CLI.


Waseem said...

Useful information...You make it easy to understand...

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Alam said...


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