Related topics from BritannicaCD-ROM
type of computer memory in the form of a compact disc that is read by optical means. A CD-ROM drive uses a low-power laser beam to read digitized (binary) data that has been encoded in the form of ...
CD
abbreviation of Cordoba Durchmusterung (q.v.), an astronomical catalog.compact disc
a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Since its commercial introduction in 1982, the audio CD has ...
cadmium
chemical element, metal of Group IIb, or the zinc group, of the periodic table.candela
unit of luminous intensity in the International System of Units (SI), defined as the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540 1012 ...
certificate of deposit
a receipt from a bank acknowledging the deposit of a sum of money. Among the common types are demand certificates of deposit and time certificates of deposit. Demand certificates of deposit are ...
compact disc
Because any type of information-not just audio-can be digitized, other forms of digital discs have been produced. Among them are the larger (120 to 300 mm [4.7 to 11.8 inches]) laserdisc, or ...
encyclopaedia
The electronic medium was developed most quickly and visibly on CD-ROM by smaller encyclopaedias or those intended for younger readers. In 1985 Grolier, Inc., issued its Academic American ...
Cervantes, Miguel de
Miguel de Cervantes (1998), provides facsimile reproductions and transcriptions of first or early editions of all of Cervantes's works. It includes more than 160 illustrations, mainly from Francisco ...
compact disc
In 1995 Philips and Sony introduced a new type of disc, known as a digital videodisc (DVD), which was able to store up to 4.7 gigabytes of data, such as high-definition digital video files. A DVD has ...
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