Compact disc
The compact disc (CD) is a digital optical disc data storage format that was codeveloped by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc. In later years, the compact disc was adapted for nonaudio computer data storage purposes as CD-ROM and its derivatives. First released in Japan in October 1982, the CD was the second optical disc technology to be invented, after the much larger LaserDisc (LD). By 2007, 200 billion CDs (including audio CDs, CD-ROMs and CD-Rs) had been sold worldwide.Standard CDs have a diameter of , and are designed to hold up to 74 minutes of uncompressed stereo digital audio or about of data. Capacity is routinely extended to 80 minutes and by arranging data more closely on the same-sized disc. The Mini CD has various diameters ranging from ; they have been used for CD singles or delivering device drivers.
The CD gained rapid popularity in the 1990s, quickly outselling all other audio formats in the United States by 1991, ending the market dominance of the phonograph record and the cassette tape. By 2000, the CD accounted for 92.3% of the entire market share in regard to US music sales. The CD is considered the last dominant audio format of the album era, as the rise of MP3, iTunes, cellular ringtones, and other downloadable music formats in the mid-2000s ended the decade-long dominance of the CD.
The ''Digital Audio'' format was later adapted (as CD-ROM) for general purpose data storage and initially could hold much more data than a personal computer hard disk drive. Several other formats were further derived, both pre-pressed and blank user writable, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video CD (VCD), Super Video CD (SVCD), Photo CD, Picture CD, Compact Disc-Interactive (CD-i), Enhanced Music CD, and Super Audio CD (SACD) which may have a CD-DA layer. Provided by Wikipedia
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151by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1943
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152by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1946
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153by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1947
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154by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1935
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155by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1940
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156by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1942
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158by Dölle, Constant, 1916-Location: Paul Bechtold Library, Catholic Theological Union
Created 2002
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161by Davis, Charles, 1923-1999Location: Paul Bechtold Library, Catholic Theological Union
Created 1961
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162by Dukker, ChrysostomusLocation: Paul Bechtold Library, Catholic Theological Union
Created 1959
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167by Deymann, Clementinus, 1844-1896Location: Paul Bechtold Library, Catholic Theological Union
Created 1888
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168by Drelincourt, Charles, 1595-1669Location: Paul Bechtold Library, Catholic Theological Union
Created 1826
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171by Davin, CorneliusLocation: U.S. Catholic Special Collection, University of Dayton
Created 1955
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172by Daniel, Charles, S.J., 1818-1893Location: John J. Burns Library, Boston College
Created 1866
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173by Daniel, Ch. (Charles), 1818-1893Location: John J. Burns Library, Boston College
Created 1876
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174by Dejob, Charles, 1847-1916Location: John J. Burns Library, Boston College
Created 1881
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179by Deutsch, ChristinaLocation: University Libraries of CUA, Catholic University of America
Created 2005
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181by Duggan, CharlesLocation: University Libraries of CUA, Catholic University of America
Created 1963
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182by Daniel, Ch. (Charles), 1818-1893Location: University Libraries of CUA, Catholic University of America
Created 1870
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183by Dezzuto, CarloLocation: University Libraries of CUA, Catholic University of America
Created 2005
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184by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1939
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185by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1945
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186by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1960
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187by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1935
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188by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1949
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189by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1950
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190by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1967
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191by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1947
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192by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1965
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193by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1932
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194by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1933
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195by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1959
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196by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1943
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197by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1935
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198by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1931
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199by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1929
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200by Dawson, Christopher, 1889-1970Location: University of St. Thomas Libraries, University of St. Thomas
Created 1945
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