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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. The first compact disc was manufactured in August 1982, and was first released in Japan in October 1982 as Compact Disc Digital Audio. The CD was more compact than the LaserDisc (LD) developed in the 1970s. The CD gained rapid popularity in the 1... Wikipedia