What are multiprogramming, multithreading, and multiprocessing?
Multiprogramming - A computer running more than one program at a time.
Multithreading - It is the ability of a program or an operating system to enable more than one user at a time without requiring multiple copies of the program running on the computer.
Multiprocessing - In computing, a mode of operation in which two or more processors in a computer simultaneously process two or more different portions of the same program.