Multi programming system · Multi programming operating system allows multiple users to execute multiple programs using a single CPU concurrently i.e. at the same time. · In multiprogramming several process are kept in the main memory and CPU execute all these processes concurrently. It means, the CPU immediately switches from one process to next that are ready to get executed · In such an operating system when one process start process start performing the instructions from several programs at the same time. · Rather, it means that there are number program available to CPU and that portion of one is executed, then segment of another and so on ...
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What do you mean by operating system? Definition : An operating system is a program that act as an interface between the user of a computer and the Computer hardware. Operating system is a first program that gets loaded into the memory through a process called booting. Concepts of operating system : · The purpose of operating system is to provide an environment in which a user can execute program in a convenient and efficient manner. · Operating system is an integrated set of program that ma...
Client server architecture Client - server architecture is distributed model representing dispersed responsibilities among independent computers integrated across a network. Therefore, it's easy to replace, repair, upgrade and relocate a server while client remains unaffected. Advantages of Client-Server Architecture: Organizations often seek opportunities to maintain services and quality competition to sustain its market position with the help of technologies. Deployment of client-server computing in an organization will effectively increase its productivity through the usage of cost-effective user interface, enhanced data storage, vast connectivity and reliable application services Improved Data Sharing: Data is retained by usual business processes and manipulated on a server is available for designated users (clients) over an authorized access. Integration of Services: Every client is given the opp...
Multi user operating system · In a multi-user operating system, multiple number of user can access different resources of a computer at a same time. · The access is provided using a network that consists of various personal computer attached to a mainframe computer system. diagram of multi -user operating system · The various personal computer can send and receive information to mainframe computer system. · The example of multi-user OS are UNIX, windows 2000,novell netware. sing...
R eal-time system · In a real time operating system, a job is to be completed within the rigid time constraints otherwise job loses its meaning. · A real time system function correctly only if it returns the correct result within its time constraints · Thus, in a real-time system, the correctness of the computation not only depends upon the logical correctness of the computation but also upon the time at which the result is produced. R eal-time system In a real time system various functions like process scheduling, memory management, I/O management and file management are performed as follows : 1. Process scheduling . the real time system uses priority based pre-emptive scheduling. each process is assigned a certain level of ...
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