A process can be thought of as a program in execution, which forms the basis of all computation. A process is the unit of work in the most systems. A process also can be known as the text section, including the current activity, stack and heap.

Early computer systems allowed only one program to be executed at a time, however, current-day computer systems allow multiple programs to be loaded into memory and more compartmentalization of the various programs. And these needs resulted in the nati