Multiple compact disks overlapping each other creating a colourful display
Multiple compact disks overlapping each other creating a colourful display. A Compact Disc (also known as a CD) is an optical disc used to store digital data, originally developed for storing digital audio. The CD, available on the market since October 1982, remains the standard physical medium for sale of commercial audio recordings to the present day. Standard CDs have a diameter of 120 mm and can hold up to 80 minutes of audio (700Mb of data). The Mini CD has various diameters ranging from 60 to 80 mm; they are sometimes used for CD singles or device drivers, storing up to 24 minutes of audio. The technology was later adapted and expanded to include data storage CD-ROM, write-once audio and data storage CD-R, rewritable media CD-RW, Super Audio CD (SACD), Video Compact Discs (VCD), Super Video Compact Discs (SVCD), PhotoCD, PictureCD, CD-i, and Enhanced CD. CD-ROMs and CD-Rs remain widely used technologies in the computer industry. The CD and its extensions have been extremely 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.
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Location: Studio
Photo credit: © Marc Pinter / Alamy / Afripics
License: Royalty Free
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Keywords: audio, background, backup, cd, cdr, cdrw, colorful, compact, computer, data, discs, disk, files, light, mass, multiple, music, overlapping, plastic, recording, recycle, reflection, rom, storage, technology, video
