space provided by silicon chips (semiconductor memory chips) or magnetic/optical media
as temporary or permanent storage
one or more programs. Two main types of computer memory are: (1) Read only memory (ROM)
, smaller part of a computer's silicon (solid state) memory that is fixed in size and permanently stores
manufacturer's instructions to run the computer when it is switched on. (2) Random access memory (RAM)
, larger part of a computer's memory comprising of hard disk, CD, DVD, floppies etc., (together called secondary
storage) and employed
in running programs and in archiving of data.
Memory chips provide access
to stored data or instructions that is hundreds of times faster than that provided by secondary storage.