Trouble visualizing how a CD

Discussion in 'Computer Science & Culture' started by HawkI, Mar 16, 2018.

  1. HawkI Registered Member

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    50
    I'm having trouble visualizing the spiral of Binary bumps on a CD being seen by the fixed position lazer reader, can anyone show me a visual diagram or video please?
     
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  3. gmilam Valued Senior Member

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  5. HawkI Registered Member

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    Thanks this is a good start, so if I put a pointer on one area and spin it, it touches all the spiral? I have so much trouble visualizing this, also I forgot to put the word work on the end.
     
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  7. DaveC426913 Valued Senior Member

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    No, the read head must track outward as the disc spins.
     
    Last edited: Mar 16, 2018
  8. HawkI Registered Member

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    So the Lazer does move? So what I was trying to visualize is impossible. I see.
     
  9. DaveC426913 Valued Senior Member

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    It's mounted on a radial arm and its position is controlled by the drive's computer.
     

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