A computer system is a collection of hardware and software components designed to provide an effective tool for computation. Computer system are used in every walk of life to assist us in the various tasks we perform. The wide availability of the internet has enhance the use of computer for information sharing and communication. Computer system allows us to store, process, display and communicate information. In any modern computer system even a simple one, in general needs several different programs in order to accomplish its various functions.

Wednesday, March 21, 2018

Multi-user operating system

Operating systems may be single user, like a typical PC at home, or multi-user, where more than one person (usually many more) can use the same computer at apparently the same time.

Multi-user operating system can be defined as an operating system that can handle more than one user concurrently. Concurrent service of requests does not necessarily mean that the requests are serviced simultaneously. Instead, to the users they appear to be serviced at the same time.

The advantage of using multi-user operating system is that it facilitates the sharing of data and information among different users.

Multi-user operating systems are very similar to multi-tasking operating system. On the other hand, multi-tasking typically refers to system in which the tasks interact, while multi-user systems generally try to isolate the various tasks.

It allows multi-user to use programs that are simultaneously running on a single network server, called a terminal server.

A dedicated transaction processing system such as railway reservation system that supports hundreds of terminal under control of a single program is an example of multi-user operating system.
Multi-user operating system
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