Durofy » multiprogramming os http://www.durofy.com Engineering & Technology Blog Sun, 05 Feb 2012 04:41:14 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 OS-Time Sharing Systems http://www.durofy.com/technology/a3os-time-sharing-systems/ http://www.durofy.com/technology/a3os-time-sharing-systems/#comments Sat, 02 Jan 2010 14:45:40 +0000 Rishabh Dev http://zarrata.com/durofy/?p=181 (A3) Time Sharing Systems

The main idea of time sharing systems is to allow a large number of users to interact with a single computer(system) concurrently.

Hence, it extended the idea of multiprogramming to allow multiple terminals with each-in-use terminal to be associated with one or more jobs.

Hence, the there are spaces for more than one user, each associated with a program or more.

The main objective of these systems is to minimize the response time to user commands.

(and lead to interactive work)


]]> http://www.durofy.com/technology/a3os-time-sharing-systems/feed/ 0 OS-Multipogramming Batch Systems http://www.durofy.com/technology/a2os-multipogramming-batch-systems/ http://www.durofy.com/technology/a2os-multipogramming-batch-systems/#comments Sat, 02 Jan 2010 14:37:52 +0000 Rishabh Dev http://zarrata.com/durofy/?p=177 In Multiprogramming Batch systems, when one job waits for the completion of an I/O operation, another is executed.

A multiprogramming system is responsible for:

-starting jobs
-taking I/P for jobs
-switching between jobs
(& ensuring protection while doing so)

Classified jobs as foreground and background jobs.

When a foreground jobs encounters an operation requiring input or giving output to the user, a background job is executed.

Hence, more than one program could be executed, but, by the same user.

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