Tuesday 14 February 2012

What Are The Basic Functions Of Operating System ?


BASIC FUNCTIONS OF OPERATING SYSTEM

Different types of operating system are used for different purpose.Their size and complexity vary from operating system to operating system. The following are the various function of an operating system , they are
  1. Managing Resource.
  2. Providing User Interface.
  3. Running Application.
  4. Support For Utility Program.
  5. Controls Computer Hardware.

1. Managing Resource : The operating system manage the resource to execute the task within the computer system depending upon their arrival in the ready Que.


2. Providing User Interface : The operating system provides the user interface to the user to interact with the computer system. The interfaces are -
  • Command User Interface ( CUI ).
  • Graphical User Interface ( GUI ).
Ready Que means the no. of process arrival to perform their task with in the central processing unit.


3. Running Application : The operating system provides the input / output resource to execute the task with in our computer system. The process execute program that has to be loaded in the Random Access Memory (RAM) from the hard disk.

For Example - When we write a letter 1st we have to load and run the MS Word, when we request to run a program the operating system locates the program or application in the hard disk and load the program to the Random Access Memory or Primary Memory.


4. Support For Utility Program : When a system raises a error or the system is corrupted or the system is virus effected or insufficient memory at that time the utility program solve our problem by using the following base -
  • Formatting.
  • Back Up Recovery.
  • Disk Defragmenter.
  • Installation.
  • Uninstallation.

5. Controls Computer Hardware : The operating system supervises all the hardware devices connected with the computer system. It gives us an idea about the status of our hardware devices that they are properly connected or not. The operating system also provides one of the technique which is known as BIOS (Basic Input Output System). Through BIOS we can maintain the system information like the system password, capacity of ram, etc.




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