What is process?The difference of the process and the program.

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 compartmentalizatio