Digital Shit

A Compact Disc (or CD) is an optical disc used to store digital data, originally developed for storing digital audio. The CD, available on the market since late 1982, remains the standard playback medium for commercial audio recordings to the present day. Standard CDs have a diameter of 120 mm and can hold up to 80 minutes of audio. There are also 80 mm discs, sometimes used for CD singles, which can store up to 24 minutes of audio.