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What is multitasking or multiprogramming?

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2005-10-10 15:38:03
2005-10-10 15:38:03

Multitasking, is, simply, doing more than one thing at the same time. In the context of computer science, it means having one or more programs open and running at the same time. Whenever you have a program open and running, a rectangle with the name of that program appears on your task bar (the silver, bar which runs across the bottom of your computer screen - with the Start button on the left). If you only have one program open, only on rectangle (button) appears on the task bar and you are not "multitasking." If you have more than one program opened, more than one button will appear, and you are multitasking.

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Related Questions


timesharing is logical extention of multiprogramming.

Multitasking: The ability to execute more than one task at the same time is called multitasking. It involves only one CPU. Multiprogramming: The ability to execute more than one task but not simultaneously is called multiprogramming.

MULTIPROGRAMING .................. The term multiprograming denotes an operating system that,in addtion to supporting multitasking. In multiprograming more than one jobs are active in memory.Within a very small period more than one jobs are executed simultaneously. MULTITASKING ............... In general multiprogramming implies multitasking,but multitasking does not imply multiprogramming. A multitasking operating system is distinguished by its ability to support concurrent execution of two or more active processes. as discussed actually both multitasking and multiprogramming are same no other answer mentioned are justifiable.....

multitasking : watching a movie while downloading a song.multiprocessing : processing two Microsoft word file at the same time.multiprogramming : upgrading yahoo messenger and msn messenger at the same time.

whar are key motivation for the development of multiprogrammig,multitasking,multithreading

Multitasking is being able to do more than one thing at a time. Multiprogramming is using more than one 'language' to accomplish a task.

First of all there is difference between program and a task. There may be multiple tasks running related to one program at the same time. so if the processor is busy in multiple tasks related to one program then it is multitasking. But if the multiple tasks which the processor is executing concurrently are related to different independent programs then the concept is know as multiprogramming.

Not really a true statement; both Windows and UNIX have multi-tasking and multi-programming capabilities.

no of tasks can be done at a time is called multi tasking no of programmes can be executed in a single system is called multi programming

types of multiprogramming and difference bet multiprocessing and multiprogramming?

acc. to me,multiprogramming is based on system level and multitasking is based on user level.operating system can execute a program or application once at a time.it means the code related to other applications would be stored in operating systems but it will activate when that particular application is activated by user. acc. to me,multiprogramming is based on system level and multitasking is based on user level.operating system can execute a program or application once at a time.it means the code related to other applications would be stored in operating systems but it will activate when that particular application is activated by user. acc. to me,multiprogramming is based on system level and multitasking is based on user level.operating system can execute a program or application once at a time.it means the code related to other applications would be stored in operating systems but it will activate when that particular application is activated by user.

Multiprogramming is collecting several jobs in a job pool and the OS selects the job from the pool so that the CPU has one job to execute , in case of any IO request for the job in execution the CPU switches to another job here switching is less compared to multitasking.So a computer system which allows such type of switching in between jobs is called a multiprogramming system. Please make note that multitasking is done by user but multiprogramming is done by operating system only.

multiprogramming or multitasking means more than one program can execute at the same time. It is the allocation of a computer system and its resources to more than one application at the same time. However in uni-programming you can have only one program running at any point in time.

Multi programming is to open the more than one programme in one computer system. Muli tasking is to use the more than one programme in one computer system.

Multiprocessing / multitasking Multiprocessing is the use of two or more processors in a single computer. to acheive greater throughput, economy of scale and increased reliability.Most multiprocessing systems use symmetric multiprocessing, SMP, (as opposed to asymmetric) where all processes share the processing load equally. Multitasking on the other hand is best explained by first defining what multiprogramming is. Multiprogramming is used to ensure the best effecient use of the CPU. Whenever a CPU is processing a program, which is loaded in memory, and it must wait for resources or I/O then it will sit idly which is a waste of the CPU. Multiprogramming will store a number of 'jobs' in a queue and whenever the CPU is waiting for I/O etc while executing a particular job, it will immediately open the next job in the queue and process that job until such time as it must wait again, and then it can select the next job in the queue or return to the previous job. In this way the CPU idle time is reduced. Multitasking is a logical extension of multiprogramming in that instead of waiting for a process to reach a stage where it must wait for I/O or some resource, it schedules time for each process that is loaded into memory, such that each process appears to the user to be running at exactly the same time.Another name for multitasking is timesharing.

THE multiprogramming system was created in 1968.

Cooperative multitasking is multitasking tohelp someone else, while peemative multitasking is multiaatsking for yourself.

That is called multitasking.That is called multitasking.That is called multitasking.That is called multitasking.

There are seven main capabilities of an operating system:Single user processingMulti-user processingSingle taskingMultitasking or MultiprogrammingMultiprocessing or Parallel processingInterprocessing communicationTime sharing

MS-DOS supports multiprogramming to some extent.-

Multiprogramming is the rapid switching of the CPU between multiple processes in memory. It is done only when the currently running process requests I/O, or terminates. It was commonly used to keep the CPU busy while one or more processes are doing I/O. It is now mostly superceded by multitasking, in which processes also lose the CPU when their time quantum expires. Multiprogramming makes efficient use of the CPU by overlapping the demands for the CPU and its I/O devices from various users. It attempts to increase CPU utilization by always having something for the CPU to execute. The prime reason for multiprogramming is to give the CPU something to do while waiting for I/O to complete. If there is no DMA, the CPU is fully occupied doing I/O, so there is nothing to be gained (at least in terms of CPU utilization) by multiprogramming.

MultiTasking:In MultiTasking operating system, several jobs are executed in parallel by the operating system, through multiple processors (or) CPUs only.Like .CPU1: Job-ACPU2: Job-BCPU3: Job-CMultiprogramming :The method of Multiprogramming systems comes in the 1960s. In that process several different programs in batch were loaded in the computer memory, and the first one began to run. One program after another executed when the first program reached an instruction waiting for a device that has a message, the context of this program was stored away, and the second program in memory was given a chance to run. The process continued until all programs finished running.By : er.karthikchawda@gmail.com

Multiprogramming is a method of running several different programs in a computer apparently at the same time.Usually on a mainframe - the computer has a number of programs loaded into memory and the operating system switches quickly between them, processing a little bit of each one in turn. The high speed of the processor makes it seem like more than one program is being run at the same time.On a PC it is usually called multitasking.Answer-multitasking is the process which occur when more than one task(job) are executed by CPU at a time....-.Multitasking should not be confusing with multiple program where by in multiprogram more than one program(task) are in the mein memory but each one are executed by CPU at different time...It is impossible CPU to running more than one program at the same time

multiprocessor is hardware based while multiprogramming in software based


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