What Is An OS ( Operating System) ?

INTRODUCTION OF Operating System

An Operating System OS is Collection of  System program that manages all the other program Application program is a computer as well as the allocation and use the hardware resources such as the CPU {Central Processing Unit } Memory and the Hard disk  drive (HDD) . It Controls and facilitates  the overall operation of a computer . It acts as an interface between the hardware and the user level program . 

Features Of Operating System

• File  Management

Responsible  for maintenance of a file system , in which the users are allowed  to create , delete and move files.  

• Memory Management

It means allocation of main memory and secondary storage areas to the system programs as well as user programs and data .

• Process Management

It means assigning  processor to different  tasks which has to be performed by the computer .

• User Interface

Software as well as hardware to the various users of the system.

• Manage Input/Output

Co-ordinates and assignment of different  output and input devices while one or more programmes are being executed .

• Handling Network Communication 
• Data And User security 

Type of  Operating system

• Simple batch operating system 
• Multi-Programmed batch operating system
• Time sharing operating system 
• Multi processor operating system
• Distributed system 
• Real-time Operating system 
• Multi-user and single-user operating system
• Multi-Tasking and single tasking operating system
• Embedded System

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