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read-only memory

noun, Computers.
1.
ROM.
Origin
1965-1970
1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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read-only memory in Science
read-only memory
  (rēd'ōn'lē)   
See ROM.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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read-only memory in Technology
storage
(ROM) A type of data storage device which is manufactured with fixed contents. In its most general sense, the term might be used for any storage system whose contents cannot be altered, such as a gramophone record or a printed book; however, the term is most often applied to semiconductor integrated circuit memories, of which there are several types, and CD-ROM.
ROM is inherently non-volatile storage - it retains its contents even when the power is switched off, in contrast to RAM.
ROM is often used to hold programs for embedded systems since these usually have a fixed purpose. ROM is also used for storage of the lowest level bootstrap software (firmware) in a computer.
See also Programmable Read-Only Memory.
(1995-05-09)
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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