CD-R
CD-R CD-recordable, a write-once optical-disk format designed to be readable by systems that can read CD-ROM disks. CD-R disks have a spiral track and a recording layer of a special cyanine or azo dye. There is a thin layer of gold or silver alloy coating the dye. In the writing process, the laser “burns” patches of the dye layer. These have different reflectivity and correspond to the pits on a CD-ROM disk. CD-R is a cheap and reliable method of data storage. Although the data cannot be erased, more data can be added later in multisession recording (although a multisession CD-ROM drive is necessary to read these added files; older CD-ROM drives only detect the first recording session). See also CD-ROM format standards.
More From encyclopedia.com
Magnetic Tape , magnetic tape An information storage medium consisting of a magnetic coating on a flexible backing in tape form. Data is recorded by magnetic encodin… Optical Disk , optical disk A type of optical storage in which the medium is in the form of a disk that is rotated to give one dimension of access while the light b… Sql , Databases are designed, built, and populated with data for a specific purpose and for an intended group of users. Databases are built for many differ… disk drive , disk drive (disk unit) A device with read/write heads and associated electronics that can store and retrieve data from one or more rapidly rotating m… Record , rec·ord • n. / ˈrekərd/ 1. a thing constituting a piece of evidence about the past, esp. an account of an act or occurrence kept in writing or some o… Cd-rom , CD-ROM
CD-ROM CD read-only memory, a means of providing read-only access to a large amount of data for use on computer systems; the term applies to t…
You Might Also Like
NEARBY TERMS
CD-R