FUNCTION OF OPERATING SYSTEM

Functions of Operating System:

There are Many Functions those are Performed by the Operating System But the Main Goal of Operating System is to Provide the Interface between the user and the hardware Means Provides the Interface for Working on the System by the user. The various Functions those are Performed by the Operating System are as Explained below:-

Operating System as a Resource Manager

Operating System Also Known as the Resource Manager Means Operating System will Manages all the Resources those are Attached to the System means all the Resource like Memory and Processor and all the Input output Devices those are Attached to the System are Known as the Resources of the Computer System and the Operating system will Manage all the Resources of the System. The Operating System will identify at which Time the CPU will perform which Operation and in which Time the Memory is used by which Programs. And which Input Device will respond to which Request of the user means When the Input and Output Devices are used by the which Programs. So this will manage all the Resources those are attached to the Computer System.

Storage Management

Operating System also Controls the all the Storage Operations means how the data or files will be Stored into the computers and how the Files will be Accessed by the users etc. All the Operations those are Responsible for Storing and Accessing the Files is determined by the Operating System Operating System also Allows us Creation of Files, Creation of Directories and Reading and Writing the data of Files and Directories and also Copy the contents of the Files and the Directories from One Place to Another Place.

1-Process Management :The Operating System also Treats the Process Management means all the Processes those are given by the user or the Process those are System ‘s own Process are Handled by the Operating System. The Operating System will Create the Priorities for the user and also Start or Stops the Execution of the Process and Also Makes the Child Process after dividing the Large Processes into the Small Processes.

2-Memory Management:Operating System also Manages the Memory of the Computer System means Provide the Memory to the Process and Also Deallocate the Memory from the Process. And also defines that if a Process gets completed then this willdeallocate the Memory from the Processes.

3-Extended Machine :Operating System also behaves like an Extended Machine means Operating system also Provides us Sharing of Files between Multiple Users, also Provides Some Graphical Environments and also Provides Various Languages for Communications and also Provides Many Complex Operations like using Many Hardware’s and Software’s.

4-Mastermind:Operating System also performs Many Functions and for those Reasons we can say that Operating System is a Mastermind. It provides Booting without an Operating System and Provides Facility to increase the Logical Memory of the Computer System by using the Physical Memory of the Computer System and also provides various Types of Formats Like NTFS and FAT File Systems.

Operating System also controls the Errors those havebeen Occurred into the Program and Also Provides Recovery of the System when the System gets Damaged Means When due to Some Hardware Failure , if System Doesn’t Works properly then this Recover the System and also Correct the System and also Provides us the Backup Facility. And Operating System also breaks the large program into the Smaller Programs those are also called as the threads. And execute those threads one by one.

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The operating  system  is  a  special  type  of  program  that  loads  automatically  when  you  start your  computer.  The  operating  system  allows  you  to  use  the  advanced  features  of  a  modern computer  without  having  to  learn  all  the  details  of  how  the  hardware  works.  There  are  a number  of  different  types  of  operating  system  in  common  use.  The  IBM  PC  (Personal Computer)  was  introduced  way  back  in  1981  and  was  originally  supplied  with  an operating  system  called  DOS  (Disk  Operating  System).  This  operating  system  was  very basic,  and  you  had  to  be  a  bit  of  a  computer  expert  just  to  understand  how  to  use  it.  It  was NOT user-friendly.  Later  on,  Microsoft  introduced  Windows  and  this  is  the  operating system  that  is  most  widely  used  on  PCs  today.   To  complicate  matters  further,  there  are  a  number  of  different  types  of  Windows.  The  first widely  used  version  of  Windows  was  called  Windows  3.1.  This  was  more  powerful  than DOS and  far  easier  to  use.  It  had  a  Graphical  User  Interface  (GUI),  i.e.  you  could  'drive'  it using  a  mouse  and  drop  down  menus.  Later,  different  releases  of  Windows  were introduced.  The  good  news  is  that  later  versions  of  Microsoft  Windows  look  almost identical  to  each  other  and  are  all  much  easier  to  use  than  Windows  3.1.