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Informattion Technology Coursework The Compact Disc Introduction The concept of the CD is based on the well-known 31/2-inch floppy disk. It is just a more complex way of storing information on a mobile piece of plastic. Today the CD has branched into all areas of modern life. Compact discs are used in music, videos, computer games and software. In this project I hope to uncover how the CD works including the mechanisms of CD drives and focus on the use of the laser in the system, all from a physicist's perspective. I also wish explain the practical benefits of the CD and why it has become so widely distributed in such a short time, and just how it has done so much for us. There seems to be a bright future for this format of data storage. It does not look as though it may die out with the LP and cassette, especially...

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