cs604 final term solved papers by moaaz

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Single-user systems
A automatic data processing system that enables just one user to use the pc at a given time is known as a single-user system. The goals of such systems area unit maximising user convenience and responsiveness, rather than maximising the use of the central processor and peripheral devices.

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Single-user systems use I/O devices like keyboards, mice, display screens, scanners, and tiny printers. they’ll adopt technology developed for larger operating systems. usually people have sole use of pc and don’t want advanced CPU utilization and hardware protection options. they will run differing types of operating systems, together with DOS, Windows, and MacOS. operational system} and UNIX operating systems can even be run in single-user mode.

Batch Systems

Early computers were giant machines run from a console with card readers and tape drives as input devices and line printers, tape drives, and card punches as output devices. The user failed to act directly with the system; instead the user ready employment, (which consisted of the program, data, and a few management data concerning the character of the task in the kind of management cards) and submitted this to the pc operator.

The task was in the form of punch cards, and at some later time the output was generated by the system— user didn’t get to act with his/her job. The output consisted of the results of the program, additionally as a dump of the ultimate memory and register contents for debugging.

To speed up process, operators batched along jobs with similar wants, and ran them through the pc as a bunch. as an example, all algebraic language programs were complied one once the opposite. the key task of such associate software package was to transfer control mechanically from one job to following.

cs604 final term solved papers by moaaz

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