What is a digital versatile disk?

Digital versatile disk, which many people refer to its abbreviation "DVD" is the diameter of the plastic disk usually 4.7 inches (12 cm), which uses microscopic pits on the disk surface to store information. The aluminum coating covers the pits so that the thin laser can read the information. They can contain anywhere from 4.7 to 17.0 gigabytes. Due to their large storage capacity, digital versatile discs are popular for data storage and are also a common medium for storing and distributing video, especially films.

Digital versatile discs are very similar to compact disks or CDs, but can hold up to 26 times more data. They rely on the same laser technology they use the CD, but because the laser that the DVD player uses is much thinner than the laser in the CD player, the points that data store can be much smaller. The DVD may also have a translucent first layer that allows the laser to access the second layer of data below it, which doubles the capacity. Digivsole disk.that also to be double -sided, which again doubles storage capacity.

There are several different types of digital versatile disk, although everyone uses the same basic technology. DVD-Rs allow the user to write information on the disk once, while DVD-RAM, DVD-RW and DVD+RWS allow the user to write information on the disk several times. DVD-ROM discs do not allow any writing-lze just read. DVD and DVD audio drives are also common, allowing video and audio content distribution.

The digital versatile disk format has become popular in the mid -90s. Initially, several different manufacturers developed variants of the same technology without standard in the entire sector. Many of the main manufacturers of computer who do not want to catch in the battle between different formats have refused to use this technology up to the manufactory discs could agree on a single standard. In 1995, these manufacturers agreed on the standardAnd today's digital versatile disk format is the result.

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digital versatile technology has become popular in the international market very shortly after its initial edition in Japan in 1996. Initially its large storage capacity was popular among software developers, but it is popular because the means to distribute video followed closely. In the end, the DVD exceeded VHS tapes as the main format for the domestic video distribution to the home market. This was largely due to improved image and sound quality that the digital versatile disk offered home film viewers. Large storage capacity has made it possible to include more information about images and sound.

Since then, the new technologies have seemed to compete with the digital versatile disk. One of them is a Blu-ray disk that uses a laser that is even thinner than the one that uses the DVD technology, ie more data storage. The shorter wavelength of this laser gives it a blue color, rather than the red color of the laser DVD.