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10 November, 01:45

List and briefly explain two other Discovery / inventions that were necessary for the eventual development of the technology needed to create and listen to CDs

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  1. 10 November, 03:06
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    CD's use laser beams to read a pattern, so the invention of the laser is necessary.

    CD's use digital representation of audio, so the invention of the analog-to-digital converter (for recording) and the digital-to-analog converter (for playback) was needed as well.
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