DVD and CD

Posted on July 1, 2007
Filed Under DVD |

The bulk of a CD consists of clear polycarbonate plastic. The plastic mines or in the form of tiny pieces inside. The data are seen as a long chain that begins in the middle and Schrägverzahnung spirals to the outside. The laser reads a CD-ROM on the underside of the disc, and given that the distance from the surface, and mine is different, you can 1s and 0s of binary, it is the components of a digital signal .

Before polycarbonate plastic layer is a layer of aluminum. At first, is that with a layer of acrylic paint, then the plant, and it is often the screen printing paste treatment or offset printing directly to the acrylic paint. As few people recall, Compact Discs were originally only for audio recordings. Later in the same physical dimension has been used for the CD-ROM to store data as well. CD-ROM of the mass using a process known as “Punch” unlike CD-R or CD-RW, the content or “burned” the user’s PC.

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