Compact Disc (also known as Audio CD, Compact disc digital audio, CDDA or CD-DA)

The Compact Disc saw the light of day in 1982 as a joint project of Philips and Sony. A particularly successful project, given that the Compact Disc conquered the world in no time. The good recording quality probably had something to do with it.

Mini CD

A smaller variety also exists: the mini CD. These small disks have a diameter between 0.24 inch (60 mm) and 0,31 inch (80 mm). They were used for audio singles, as business cards (round, rectangular or another shape) or as a carrier for computer software.

Did you know …

… that the first Audio CDs had a capacity of 74 minutes? That was a demand of Sony DEO Norio Ohga, because he wanted to fit Beethoven’s complete Symphony No. 9 on one single disk.*