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CD | Compact Disc

 
Compact Disc
Media Type Optical Disc
Encoding Various
Capacity Typically up to 700 MiB (up to 80 minutes audio)
Read mechanism 780 nm wavelength semiconductor laser
Write mechanism 1200 Kib/s (1×)
Developed by Philips, Sony
Usage Audio and data storage

The Compact Disc, or CD for short, is an optical disc used to store digital data. It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data (CD-ROM), write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Discs (VCD), Super Video Compact Discs (SVCD), PhotoCD, PictureCD, CD-i, and Enhanced CD. Audio CDs and audio CD players have been commercially available since October 1982.

 

Diameter

Standard CDs have a diameter of 120 millimetres (4.7 in) and can hold up to 80 minutes of uncompressed audio or 700 MiB (actually about 703 MiB or 737 MB) of data. The Mini CD has various diameters ranging from 60 to 80 millimetres (2.4 to 3.1 in); they are sometimes used for CD singles, storing up to 24 minutes of audio or delivering device drivers.

 

Development

CD-ROMs and CD-Rs remain widely used technologies in the computer industry. The CD and its extensions are successful: in 2004, worldwide sales of CD audio, CD-ROM, and CD-R reached about 30 billion discs. By 2007, 200 billion CDs had been sold worldwide. Compact Discs are increasingly being replaced or supplemented by other forms of digital distribution and storage, such as downloading and flash drives, with audio CD sales dropping nearly 50% from their peak in 2000.



 

Logical Formats


  • Audio CD
  • Super Audio CD
  • CD-MIDI
  • CD-ROM
  • Video CD (VCD)
  • Super Video CD (SVCD)
  • Photo CD
  • Enhanced CD
  • VinylDisc
  • Bootable CD
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Version: 3.2.7
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Requirements

You can download Blu-ray Media Player and test it before buying.

Requires OS X 10.5+ and Blu-ray Drive

Requires Windows XP or later and Blu-ray Drive

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