Compact Disc

A Compact Disc (also known as a CD) is an optical disc used to store digital data. It was developed to store music at the start, but later it also allowed to store other kinds of data. CD have been available since October 1982. In 2009, they are still the standard physical medium for commercial audio recordings. Standard CDs have a diameter of 120 mm and can hold up to 80...
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  • CD

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