Sunday, March 13, 2011

CD?? what??

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

~one~

drive motor spins the disc. 

~two~

laser and a lens system focus in on and read the bumps.

~three~

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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