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The full form of DVD is Digital Versatile Disc. DVD is a digital optical disc storage format that was developed in 1995 and is used to store vast amounts of data, such as HD videos and movies. VCDs were the industry standard optical digital storage discs prior to their release. Despite being about the same size and shape, DVDs have a higher storage capacity than compact discs. DVD also had an unofficial full name: Digital Video Disc. Four companies, Sony, Toshiba, Philips, and Panasonic, discovered and developed it in 1995.
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Types of DVD
A DVD can be classified in several ways based on its applications, as mentioned below:
- DVD-ROM: It can only be read and cannot be written on.
- DVD-R: This format can store any type of data.
- DVD-RW: This type of disc can be read, written, erased, and rewritten.
History of DVD
- The DVD was created to replace VHS cassettes, but it quickly proved popular as a storage technique.
- Audio-CD was introduced as a kind of entertainment in 1972.
- The MMCD (Multimedia Compact Disc) and SD (Super Density) video discs were introduced in 1993.
Benefits of DVD
- Storage with a high capacity, such as 4.7 – 9 Gb.
- Excellent picture and sound quality, making this the ideal method for storing videos and audio.
- Because they are mass-produced, they are quite inexpensive.
- Data can be stored on both sides of a DVD, just like it can on a CD.
Sizes of DVD
- 120 mm DVD – Used for storing software, videos, operating systems, and other data.
- 80 mm DVD – Used for small devices such as portable music players and video cameras.
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