Compact disc recordable
noun
1.
the full name for CDR
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)
Read Also:
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- Compact-disk
noun 1. an optical disk approximately 4.75 inches (12 cm) in diameter, on which a program, data, music, etc., is digitally encoded for a laser beam to scan, decode, and transmit to a playback system, computer monitor, or television set. Abbreviation: CD. compact disk or compact disc (kŏm’pākt’) A small optical disk on which data […]
- Compact-disk-player
noun 1. a device for playing compact disks.
- Compactibility
[kuh m-pak-tuh-buh l] /kəmˈpæk tə bəl/ adjective 1. capable of being : compactible rubbish.
- Compactible
[kuh m-pak-tuh-buh l] /kəmˈpæk tə bəl/ adjective 1. capable of being : compactible rubbish.