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~

A drive motor spins the disc. 

~two~

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

~three~

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,