Difference between revisions of "DVD"
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A [[DVD]] or '''Digital Video Disc''' is a circular shaped plastic disc used for playing video, and storing data. Data is read by reflecting a concentrated laser beam at a thin metallic layer within the disc. Fine holes or pits in the layer are picked up by the laser mechanism, and converted into data or video. | A [[DVD]] or '''Digital Video Disc''' is a circular shaped plastic disc used for playing video, and storing data. Data is read by reflecting a concentrated laser beam at a thin metallic layer within the disc. Fine holes or pits in the layer are picked up by the laser mechanism, and converted into data or video. | ||
| − | A DVD use the same concepts as a [[CD-ROM], but with higher speeds, and larger data storage, without increasing the physical disc size. | + | A DVD use the same concepts as a [[CD-ROM]], but with higher speeds, and larger data storage, without increasing the physical disc size. |
[[category:Technology]] | [[category:Technology]] | ||
Revision as of 16:02, August 17, 2007
A DVD or Digital Video Disc is a circular shaped plastic disc used for playing video, and storing data. Data is read by reflecting a concentrated laser beam at a thin metallic layer within the disc. Fine holes or pits in the layer are picked up by the laser mechanism, and converted into data or video.
A DVD use the same concepts as a CD-ROM, but with higher speeds, and larger data storage, without increasing the physical disc size.