Compact Disc

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.

Standard CDs have a diameter of 120 millimetres (4.7 in) and can hold up to 80 minutes of uncompressed audio or 700 MB (700 × 106 bytes) 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.

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.

Read more about Compact DiscHistory, Physical Details, Manufacture, Recordable CD, ReWritable CD, Copy Protection

Other articles related to "compact disc, disc, compact discs, discs":

The Emotron - Discography
... Label 2006 Teenage Jesus Death By Karaoke (compact disc) 2007 The Decemberwrist Asbestos Records (compact disc) 2008 Live at One Member Band Fest Prison City ...
Some Bizzare Records Discography - Compact Disc - CD Albums
... The The Soul Mining The The Infected the movie The The Infected the album The The Mind Bomb The The Dusk The The Hanky Panky The The "Best Of". ...
Eric Johnson - Career
... to the group's early recordings, and decades later their two albums were given wide release on compact disc ... Named the 'G3' tour, it resulted in a successful platinum-selling compact disc and DVD titled G3 Live In concert ... Rose" at the Crossroads Guitar Festival, included on Disc 2 of the 2004 Crossroads Guitar Festival recording ...
Håkan Johansson - Discography - With Division of Laura Lee
... Records) 1998 Milemarker Split Seveninch (Elephant Kids) 1999 "At the Royal Club" Compact Disc (Arabesque Records) 2001 "Pretty Electric" Cdep (Burning Heart Records) 2002 "Black City ...
Compact Disc - Copy Protection
... companies to market "copy-protected" non-standard Compact Discs, which cannot be ripped, or copied, to hard drives or easily converted to MP3s ... One major drawback to these copy-protected discs is that most will not play on either computer CD-ROM drives, or some standalone CD players that use CD-ROM mechanisms ... Philips has stated that such discs are not permitted to bear the trademarked Compact Disc Digital Audio logo because they violate the Red Book specifications ...

Famous quotes containing the words disc and/or compact:

    “When the sun rises, do you not see a round disc of fire somewhat like a guinea?” O no, no, I see an innumerable company of the heavenly host crying “Holy, Holy, Holy is the Lord God Almighty.”
    William Blake (1757–1827)

    The worst enemy of truth and freedom in our society is the compact majority. Yes, the damned, compact, liberal majority.
    Henrik Ibsen (1828–1906)