Artwork is screen printed on the top of the disc.A layer of lacquer protects the shiny layer.A polycarbonate disc layer has the data encoded by using bumps.By 2007, 200 billion CDs had been sold worldwide. In 2004, worldwide sales of audio CDs, CD-ROMs, and CD-Rs reached about 30 billion discs. By 2010, hard drives commonly offered as much storage space as a thousand CDs, while their prices had plummeted to commodity levels. 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.Īt the time of the technology's introduction in 1982, a CD could store much more data than a personal computer hard disk drive, which would typically hold 10 MiB. Capacity is routinely extended to 80 minutes and 700 MiB by arranging data more closely on the same-sized disc. Standard CDs have a diameter of 120 millimetres (4.7 in) and are designed to hold up to 74 minutes of uncompressed stereo digital audio or about 650 MiB of data. Several other formats were further derived, 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) and Enhanced Music CD. The format was later adapted (as CD-ROM) for general-purpose data storage.

It was released on Main North America and Europe. It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc. In August 1982, the first compact disc was manufactured. 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.

High-Definition Versatile Multilayer Disc (HD VMD).

HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM.

Blu-ray Disc ( BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc.DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, DVD-Video, HVD, EcoDisc, MiniDVD.Compact disc ( CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD ( SACD), Photo CD, CD Video ( CDV), Video CD ( VCD), Super Video CD ( SVCD), CD+G, CD-Text, CD-ROM XA, CD-i, MIL-CD, Mini CD.

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