Compact disc wikipedia - Search
Open links in new tab
  1. Physical details

    A CD is made from 1.2-millimetre (0.047 in) thick, polycarbonate plastic, and weighs 14–33 grams. From the center outward, … See more

    Compact disc - Wikipedia

    • The compact disc (CD) is a digital optical disc data storage format that was co-developed 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 non-audio computer data storage purposes as CD-ROM an… See more

    Media typeOptical disc
    EncodingVarious
    CapacityTypically up to 700 MiB (up to 80 minutes audio), 800 MiB (also up to 90 minutes audio), 870 MiB (and up to 99 minutes audio)
    Read mechanism780 nm wavelength (infrared) semiconductor laser (early players used helium–neon lasers),
    Logical format

    The logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA) is described in a document produced in 1980 by the format's joint creators, Sony and Philips. The document is known colloquially as the Red … See more

    Manufacture, cost, and pricing

    In 1995, material costs were 30 cents for the jewel case and 10 to 15 cents for the CD. The wholesale cost of CDs was $0.75 to $1.15, while the typical retail price of a prerecorded music CD was $16.98. On average, th… See more

     
    Kizdar net | Kizdar net | Кыздар Нет
  1. Some results have been removed