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Differentiate between Batch Operating System and Time Sharing Operating System?
Batch operating systems: A batch is a sequence of jobs. Such batch is submitted to batch processing operating systems moreover output would show some later time in the form of a program or like program error. For speed-up processing same jobs are batched together. The main task of batch operating systems is to transfer control automatically from one job to next. Now there the operating is always in the memory.
(i) This is lack of interaction between job and user while executing
(ii) Turnaround time is more.
(iii) CPU is often idle; due to 1/0 devices are very slow.
Time sharing: It is also called as multi tasking, is a logical execution of multiprogramming. Multiple jobs are executed through the CPU switching among them. Now there the computer system gives on line communication in between the user and the system.
Now there the CPU is never idle. Time shared operating system permits many users to share the computer concurrently.
Time sharing systems needs some sort of memory protection and management.
A UNIX device driver is ? Ans. A UNIX device driver is structured in two halves termed as top half and bottom half.
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