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How do music CDs store information?

Updated: 8/20/2019
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10y ago

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A CD (or compact disk) is made up from several layers of plastic, each doing its own function. If you take a microscope and take a look at a CD, you will notice this is true. Somewhere in the middle of all of these layers you will find the data layer (which is where the music is kept), and it is where the music is stored as digital information (data). Secondly there are the tracks of the disc, which is what the disc reader sees when it is reading it, and it does so through its optical eye, by using lasers to detect the data layer on the CD.

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