What is RAM?
RAM stands for Random Access Memory. It is some times referred to as Main Memory. Its purpose is to store open programs and data that the computer is currently using.


Features of RAM:
RAM is volatile memory.
This means it loses its contents when there is no power
(i.e. when the computer is switched off)
The contents of RAM are changed easily.
RAM is usually several Gigabytes in size.

What is ROM?
ROM stands for Read Only Memory.
Its purpose is to store the bootstrap loader. This is a program that contains the instructions to start up a computer
ROM is non-volatile memory.
This means it retains its contents even when there is no power
(i.e. when the computer is off)
The contents of ROM can not be changed easily.
ROM is usually several megabytes in size.
