compact disc recordable

Noun

1.

compact disc recordable - a compact disc on which you can write only once and thereafter is read-only memory Synonyms: CD-R, CD-WO, compact disc write-once

(storage)

Compact Disc Recordable - (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. See also CD-RW and DVD-RAM.

CD, CD-R, CD-WO, compact disc, compact disc write-once, compact disk