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Stories about: optical storing devices

How Blu-ray Discs Work It all started in 1982, when compact discs became commercially available. They were the first optical devices used to store data in a digital format, have typical capacities of up to 700 megabytes, or 80 minutes in audio format, and diameters between 60 to 120 millimeters. In 1997, a new optical storing medium became... 17 April 2008 09:13 GMT