3 Differences between time sharing and real time systems

Time sharing operating systems are extension of multi-programmed batched operating system and the extension is that here the user can interact with the program running. The CPU scheduling algorithm and allocate small amount time to each job at once and then move on to the next job. Thus the user can get output from the program and can input another command and wait for the output. Keyboard is used to input command and monitors are for output. A time sharing operating system allows many user to use the same computer at the same time such as every user is using his own computer. This is achieved by frequently switching from one program to another and satisfying users with an output from the program before switching to the next one.

Real time systems are special purpose systems where there are rigid time requirement on the operation of a processor or the flow of data and thus is often used as a control device in a dedicated application. Real time systems depends on data from sensors, then process it and through output before the time constraints. Real time operating systems has well defined, fixed time constraints. Processing must be done within the given time constraints or the system fails. Two types of real time systems can be seen; such as hard real-time systems and soft real-time systems.