Compact disc (CD) is a digital optical disc data storage format co-developed by Philips and Sony to store and play digital audio recordings. It employs the Compact Disc Digital Audio (CD-DA) standard …

Jul 15, 2025 · Compact discs, sometimes known as CDs, typically have a diameter of 12 cm, or 4.5 inches. There are four distinct layers in it. The top layer is used to mark the disc's identification …

Dec 2, 2025 · Abbreviated as CD, a Compact Disc is a flat, round optical storage medium invented by James Russell. The first CD was created at a Philips factory in Germany on August 17, 1982.

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Dec 5, 2025 · Compact disc, a molded plastic disc containing digital data that is scanned by a laser beam for the reproduction of recorded sound and other information. Learn more about the history of …

Feb 5, 2025 · There have been many formats introduced for playing music over the years, but none have dominated more than CDs. After peaking in 2002, it's been a slow decline ever since. However, …

Mar 6, 2024 · A compact disc or CD is a disc that's made of plastic and used to store data such as video, audio and text files. Compact discs replaced floppy discs because they are more efficient to …

Oct 19, 2023 · What Is A Compact Disc? Compact disc CD is a digital storage format for optical media jointly developed by Philips and Sony. The CD format was originally developed for storing and …

May 23, 2025 · The first workable digital compact disc device, the precursor to now-ubiquitous CD/DVDs, was invented in the late 1960s by the American physicist James Russell.

A compact disc (CD) is a portable storage device in the form of small plastic discs that store and retrieve computer data or music using light. It is a digital optical disc storage format co-developed by Philips …