CD-ROM

From IexWiki

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 CDs, 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. Microsoft and Apple Computer were early enthusiasts and promoters of the CD-ROM. The CD-ROM Yellow Book standard was established in 1985 by Sony and Philips. Several formats used for CD-ROM data were added later which include the Green Book and White Book.