Computer Science - Operating Systems Concepts - Discussion

Its not "allows multiple programs to reside in separate areas of core at the time".

But it is "allows multiple programs to reside in memory at the time".

If multiple programs are processed by different core of processors. It is multiprocessing".

It is a technique to execute no of program simultaneously by a single processor.

The ability of a CPU to work with more than one process at a time sharing the memory using overlay and swapping.

Can anyone explain me the concept of multi programming?

Difference between multiprocessing and multiprogramming.

@Sumit &Mohamed.

I think the core to which the text refers is the main memory. The core is an old term for memory. Multiprogramming is the technique of keeping some programs in main memory and taking advantage of the CPU's free time to run a different program when the current one requests input and output operation. The evolution of multiprogramming is multitasking, which uses time-sharing to give time slices to each process. As these slices of time are very small in relation to the human temporal dimension, we have the impression that several programs are running at the same time. This is different from multiprocessing, which allows more than one process to run simultaneously, as there is more than one processor.