Operating system :-An operating system is the software that uses the raw capabilities of hardware and build a platform for execution of program. the operating system manages hardware resources ,provides facilities for accessing those resources and creates higher level ab station like file directories and process.
Typical computer contains 5 major components:
- Hardware
- Operating system
- System programs
- Application programs
- User
Structure of operating system
Process Management:-A process is an existing program . Associated with process are its code , its data , a set of resources allocated to it and one or more “flows” of execution through its code.
Memory management:-At a minimum ,memory must be shared by an application program and operating system .
File system management:-Computer process information that must be transmitted , processed and stored at a proper location in programming drive .
Device management:- A computer communicates information with its input and output devices . Processes access those devices with the operating system supervisor .call provided for that purpose
too definative
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