TYPES OF OPERATING SYSTEM
There are different types of operating systems available, which require different types of hardware to run upon.
(i) SINGLE PROGRAM OPERATING SYSTEM :- As the name suggests, this operating system is single user operating system, so only one user program can be supported and executed by it at any point of time.
(ii) MULTIPROGRAM OPERATING SYSTEM :- Unlike single program OS, this is multiuser OS. It supports multiprogramming i.e. more than one user can be supported by it, therefore, more than one user programs are loaded and active in the main store at the same time. These active programs are executed using some techniques one by one.
(iii) TIME SHARING OPERATING SYSTEM :- This OS uses the time sharing technique. each active user program is given a fair share of CPU time, if the time elaspes or an I/O operation is requested, CPU shifts over to the next job waiting and the previous program is put to wait or handed over to I/O manager. The active programs are scheduled for execution using certain job scheduling techniques.
(iv) REAL TIME OPERATING SYSTEM :- In real time OS, the job have fixed dealines and the jobs have to be completed within their dealines. The system performance is measuerd by its ability to complete within its dealine, this situation is called deadline overrun. An efficient real OS is that which gives minimum possible dealine overrun.
(v) MULTIPROCESSING OS :- The multiprocessing OS is capable od handling more than one processors as the jobs have to be executed on more than one processor. The multiprocessing OS should be capable of loadsharing in case of identical processors so that the system's efficiency improves. In case of unidentical processors, the multiprocessing OS should be able to control the super processor and in turn control the working of slave processors.
(vi) INTERACTIVE OS :- These Operating system are interactive in nature. These provide GUI interface to facilitate move and easy interaction to the user.
There are different types of operating systems available, which require different types of hardware to run upon.
(i) SINGLE PROGRAM OPERATING SYSTEM :- As the name suggests, this operating system is single user operating system, so only one user program can be supported and executed by it at any point of time.
(ii) MULTIPROGRAM OPERATING SYSTEM :- Unlike single program OS, this is multiuser OS. It supports multiprogramming i.e. more than one user can be supported by it, therefore, more than one user programs are loaded and active in the main store at the same time. These active programs are executed using some techniques one by one.
(iii) TIME SHARING OPERATING SYSTEM :- This OS uses the time sharing technique. each active user program is given a fair share of CPU time, if the time elaspes or an I/O operation is requested, CPU shifts over to the next job waiting and the previous program is put to wait or handed over to I/O manager. The active programs are scheduled for execution using certain job scheduling techniques.
(iv) REAL TIME OPERATING SYSTEM :- In real time OS, the job have fixed dealines and the jobs have to be completed within their dealines. The system performance is measuerd by its ability to complete within its dealine, this situation is called deadline overrun. An efficient real OS is that which gives minimum possible dealine overrun.
(v) MULTIPROCESSING OS :- The multiprocessing OS is capable od handling more than one processors as the jobs have to be executed on more than one processor. The multiprocessing OS should be capable of loadsharing in case of identical processors so that the system's efficiency improves. In case of unidentical processors, the multiprocessing OS should be able to control the super processor and in turn control the working of slave processors.
(vi) INTERACTIVE OS :- These Operating system are interactive in nature. These provide GUI interface to facilitate move and easy interaction to the user.
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