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%ما هو (من)٪ 1 - تعريف
COMPACT DISC FORMAT THAT CAN BE WRITTEN ONCE AND READ ARBITRARILY MANY TIMES
Blank recordable CD; Blank Recordable CDs; Recordable CD; CD-WO; Write once CD; Optical Programmable Read Only Memory; CD-WORM; CD+R; Burned cds; Cd-r; CD-Rs; Blank CD; CD-Recordable; Music cd-r; Compact Disc Recordable; GigaRec
Compact Disc Recordable
<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)
CD-R
¦ abbreviation compact disc recordable, a CD which can be recorded on once only.
CD-R
A CD-R is a CD which is capable of recording sound and images, for example from another CD or from the Internet. CD-R is an abbreviation for 'compact disc recordable'.
N-COUNT
ويكيبيديا
CD-R
CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times.
CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the introduction of CD-R, unlike CD-RW discs.
