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  CompactDisc

Sigma KEE - CompactDisc
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CompactDisc
An instance of CompactDisc is a flat, disc-shaped DigitalDataStorageDevice that has a reflective medium on at least one side, in which a laser is used to write and read bits of data.
Relationships      
Parents DigitalDataStorageDevice An instance of DigitalDataStorageDevice is an ElectronicDataStorageDevice intended to be used for storing data (information) in some digital (discrete bit) encoding scheme designed for interpretation by computers.
  OpticalDisc This Class comprises several subclasses of disc-shaped data storage devices. Unless otherwise indicated, instances of all of these classes are generally consist of plastic discs incorporating one or more reflective layers of gold or aluminum, which is pitted by a laser to encode data.
  RemovableDigitalDataStorageDevice A type of DigitalDataStorageDevice that can be temporarily installed in a computer and is readily removable.
Children CD-RA type of CompactDisc that can be written on once and read from multiple times.
 CD-ROMAn instance of CD-ROM is a CompactDisc in the CompactDisc-ReadOnlyMemory (CD-ROM) format, which allows no modification of data after it has been written.
 CD-RWA type of CompactDisc that can be written on and read from multiple times.


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