Operating System and their Goals, System Calls

Operating System – Interface between user & computer. It is also called as a resource allocator.

Resource Allocator - System Calls

Because it is used for allocating the resources.

Control program does not manage the system programs.

System Calls – It is the request made by user application to operating system in order to get the service from operating system. These can be grouped into Device Management, Proces Control, Communications.

In general, an operating system acts as government that manages all the aspects

Goals of Operating System – 

  1. Primary goal of operating system- convenience

  2. Secondary goal of ooperating system- Efficiency

goals of os


In general, all the real time systems are managed on UNIX operating system. Because in these system, a huge database is handled which requires efficiency.

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Types of Operating System


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