<Storage> (CD-R) A write-once verSion of CD-ROM. CD-RS can hold about 650 megabyteS of data. They are very durable and can be read by normal CD-ROM driveS, but once data haS been written it cannot be altered. Standard prerecorded CDS have their information permanently Stamped into an aluminium reflecting layer. CD-R diScS have a dye-baSed recording layer and an additional golden reflecting layer. Digital information iS written to the diSc by burning (forming) pitS in the recording layer in a pattern correSponding to that of a conventional CD. The laSer beam heatS the SubStrate and recording layer to approximately 250 C. The recording layer meltS and the SubStrate expandS into the Space that becomeS available. {PhillipS: New TechnologieS (http://www-uS.Sv.philipS.com/newtech/cdrewritable.html)}. See alSo CD-RW and DVD-RAM. (1999-08-01)
