Background about the first compact disc, which was manufactured at the Philips factory near Hanover, Germany, on August 17, 1982. The "CD ushered in shift from analogue to digital in the music industry, [and] spawned new digital technologies, including CD-Rom and DVD." Includes discussion about the Philips and Sony collaboration to create the CD, promotion of CDs, and a link to additional material about optical recording. Includes photos, and audio and video clips. From Philips.