It is a system software that controls and co-ordinate the operation of a computer system.
Parts of the operating system:
- Resident Part
This part of operating system is smaller in size.
Residential part of an operating system is stored in stored in ROM.
Kernel “Nucleus” Is present in it.
It includes basic instructions and commands “BIOS“.
2. Transient part
This part of an operating system is larger in size.
It resides inside the secondary storage (Hard disk)
It includes all accessories system function.
CORE TASKS OF AN OPERATING SYSTEM
- PROCESSOR MANAGEMENT
- MEMORY MANAGEMENT.
- STORAGE MANAGEMENT.
- DEVICE MANAGEMENT.
- APPLICATION MANAGEMENT.
- IT PROVIDE USER INTERFACE .
EXAMPLES: Windows, Linux, Unix, Android, DOS, Symbian, IOS.