chaper8 Memory Management
1.Background
Program must be brought into memory and placed within a process for it to be run.
Input queue – collection of processes on the disk that are waiting to be brought into memory to run the program.
User programs go through several steps before being run.

2.Swapping
A process can be swapped temporarily out of memory to a backing store, and then brought back into memory for continued execution.
Backing store – fast disk large enough to accommod