What is Operating System

                    Operating System

To define a Operating System we must have to know, what is the work of an operating system, since the work done by operating system is different in different situation hence defining an operating system in terms of either of
the particular area of work, just can't define it fully.

So from the last paragraph one question comes what is an operating system, why can't we define it easily, and an answer of these question is nothing but the implementation of OS in different way.
               First we consider the work of an OS for a single user, for a single user an OS is nothing but a software which gives him the facility to play video, audio, pictures, internet surfing and some more stuff, in this case the operating system has a little bit to do with the resource utilization.
               But if the user is on a terminal from where a number of computers are connected and all are accessing the terminal then there is a lots of work of resource utilization is evolved, here operating system is working as a resource utilizer.

            If we view the OS from the system prospective then it work as a resource allocator since if a system is   running then there are many resource like CPU time, main memory, VDU(visual display unit), Keyboards, Printers etc are to be allocated in such a way that there should be no any conflict and from this view operating system works as the allocator, which reduces conflict and manages the process in utilizing them.
         From the above discussion we understood that OS works different in different situation. Hence we can define Operating System as:


Operating System is a tool to solve the computing needs of its users with an efficient utilization of the resources.
or you can say,
Operating System is a bridge between user and hardware.(general definition)

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