Operating System and their Goals, System Calls
Operating System – Interface between user & computer. It is also called as a resource allocator.
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 –
- Primary goal of operating system- convenience
Secondary goal of ooperating system- Efficiency
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.
|Types of Operating System|