hey guys!!
now!!
i want to talk about
CD
============================
what is CD???
CD is
small, portable, round medium made of molded polymer
for
electronically recording, storing, and playing back
audio, video, text,
and
other information in digital form
Some variations of the CD include:
CD-ROM
CD-i
CD-RW
CD-ROM XA
CD-W
photo CD
video CD
========================================
CD Player Components
A drive motor spins the disc.
A laser and a lens system focus in on and read the bumps.
A tracking mechanism moves the laser assembly
so that
the laser's beam can follow the spiral track.
The tracking system has to be able to move the laser at micron resolutions.
click picture to know more about this!!
Best regards,
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