Time-Sharing Operating Systems are one of the important types of operating systems.
Time-sharing enables many people, located at various terminals, to use a particular computer system at the same time. Multitasking or Time-Sharing Systems is a logical extension of multiprogramming. A processor’s time is shared among multiple users simultaneously is termed time-sharing.
The main difference between Time-Sharing Systems and Multi programmed Batch Systems is that in the case of Multi programmed batch systems, the objective is to maximize processor use, whereas, in Time-Sharing Systems, the objective is to minimize response time.
Multiple jobs are implemented by the CPU by switching between them, but the switches occur so frequently. So, the user can receive an immediate response. For example, in transaction processing, the processor executes each user program in a short burst or quantum of computation, i.e.; if n users are present, then each user can get a time quantum. Whenever the user submits the command, the response time is in a few seconds at most.
An operating system uses CPU scheduling and multiprogramming to provide each user with a small portion of the time. Computer systems that were designed primarily as batch systems have been modified into time-sharing systems.
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Advantages of Timesharing operating systems are −
- It provides the advantage of quick response.
- This type of operating system avoids duplication of software.
- It reduces CPU idle time.
Disadvantages of Time-sharing operating systems are −
- Time-sharing has the problem of reliability.
- Questions about the security and integrity of user programs and data can be raised.
- The problem of data communication occurs
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