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main memory
<storage, architecture> The storage device used by a computer
to hold the currently executing program and its working data.
A modern computer's main memory is built from random access
memory integrated circuits. In the old days ferrite core
memory was one popular form of main memory, leading to the
use of the term "core" for main memory.
Computers have several other sorts of memory, distinguished by
their access time, storage capicity, cost, and the typical
lifetime or rate of change of the data they hold. Registers
in the CPU are fast, few, expensive and typically change
every few machine instructions. Other kinds are cache,
PROM, magnetic disk (which may be used for virtual
memory), and magnetic tape.
(1996-11-04)
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Nearby terms:
mainframe « mainframe programmer/analyst « main loop « main memory » MAINSAIL » maintainer » maintainer script
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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