Compact disc - Wikipedia
网页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. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc.
When Were CDs Invented, and How Do They Work? | HowStuffWorks
网页2024年3月6日 · The invention of the standard compact disc revolutionized the way music, data, and later video were stored and distributed, marking a significant leap from analog to digital storage media. Developed jointly by Philips and Sony, the CD format was finalized in 1982 and famously documented in the Red Book standard.
Compact disc (CD) | Definition & Facts | Britannica
网页2024年9月21日 · 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 the compact disc, …
Compact Disc Explained – Everything You Need To Know - History …
网页2023年7月28日 · Compact discs are portable storage devices used for recording, storing, and playing video, audio, and other forms of digital data. So how does the compact disc work? Whenever a CD is played, a laser beam focuses on the CD’s data track as it rapidly spins around; the laser beam reflects differently off the aluminum layer of the CD – the ...
History of the CD: 40 years of the compact disc - BBC
网页2019年3月12日 · Forty years ago the world got its first glimpse of what would become one of the most important music devices in history - the compact disc (CD). The CD was invented in 1979. At a time before...
What is compact disc (CD)? | Definition from TechTarget
网页A compact disc is a portable storage medium that can record, store and play back audio, video and other data in digital form. A standard compact disc measures 4.7 inches, or 120 millimeters (mm), across, is 1.2 mm thick, weighs between 15 grams and 20 grams, and has a capacity of 80 minutes of audio, or 650 megabytes (MB) to 700 MB of data. A ...
The history and evolution of the compact disc (CD)
网页A look into the origins of the CD and how it has evolved over the years. In the late 1970s, the two companies Philips and Sony, separately developed prototypes in a bid to become the first to develop the Compact Disc (CD). Below, we …
CD Definition - What is a CD (Compact Disc)? - TechTerms.com
网页2023年4月18日 · A CD is a type of optical media for storing digital audio and data. CDs are circular discs, 120 mm (4.7 in) in diameter and 1.2 mm (0.047 in) thick.
History of the CD and the Story of the Compact Disc - Voices
网页2013年6月21日 · From CD-ROM, DVD and Blu-Ray, the history of the compact disc shows that this form of media has had a long and interesting journey.
How Does A Compact Disc (CD) Work? - Science ABC
网页2023年10月19日 · 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 playing sound recordings but was later adapted for storing data.