Computer Accessories
How does a CD hold information?
Answered by
Science Channel
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Science Channel
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CDs, or compact discs, store music and other files as digital information represented as a series of ones and zeros. These ones and zeros are etched into a CD as a continuous track of millions of bumps and flat areas. The track begins at the CD's center and spirals out toward the outer edge. A CD player passes a laser over the track from the center of the disc to its edge to detect the bumps and flat areas. When the beam hits a flat area, the laser reflects onto an optical sensor and reads it as a one. When the beam hits a bump, it reflects away from the sensor, which it reads as a zero.
Still Curious?
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What is TWAIN?
Answered by Discovery Channel
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How does an optical mouse work?
Answered by Planet Green
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How does a computer mouse work?
Answered by Planet Green
