CD-ROM (Compact Disc-Read Only Memory) & DVD (digital versatile disk)
"The CD-ROM (an abbreviation for "Compact Disc Read-Only Memory") is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. A CD-ROM is a flat, metallized plastic disc with digital information encoded on it in a spiral from the center to the outside edge." (Wikipedia, 2005. CD-ROM). 

"DVD is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. DVDs resemble compact discs: their physical dimensions are the same—12cm or the mini 8cm—but they are encoded in a different format and at a much higher density." (Wikipedia, 2005, DVD).

For Library and Information Science CD-ROMs and DVDs are kinds of media.

Literature:

Elshami, A. M. (1990). CD-ROM technology for Information Managers. Chicago, Ill.: American Library Association.
 

Wikipedia, the free encyclopedia.(2005).CD-ROM. http://en.wikipedia.org/wiki/Cd-rom

Wikipedia, the free encyclopedia.(2005). DVD. http://en.wikipedia.org/wiki/Dvd

Periodicals: 

CD-rom librarian (vol. 6, 1991);
 

CD-ROM Professional (vol. 4, 1991).(now named EMedia Professional) http://www.findarticles.com/p/articles/mi_m0FXG

Gale directory of databases. - January 1993-. - Detroit : Gale, 1993- . -  
Volume 1, Part 1: Online Databases. In two volumes: Vol. 1: Online databases. Vol. 2: CD-ROM, diskette, magnetic tape, handheld, and batch access database products.

CD-bibliography: http://www.cd-info.com/CDIC/Bibliography.html

Birger Hjørland

Last edited: 19-12-2005

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