This strategy improves multitasking abilities, information processing speed, and computer reliability. Now, since you clicked on this blog to understand the differences between multiprogramming, ...

In multiprogramming one or more programs gets loaded in the main memory of the system which can be executed. at most one process can run on the system while all the others are waiting for their turn.

Difference between Multiprogramming, multitasking, multithreading and multiprocessing Pretty much what the title says, this site explains the definition and difference between multiprogramming, ...