What is DVD(Digital Versatile Disc)? Types of DVD .
DVD(Digital Versatile Disc)
DVD stands for Digital Versatile Disc . A
DVD is a type of option media used for
storing digital data. It is the same size as
a CD , but has a larger storage capacity
Some DVDs are formatted specifically for
video playback , while others may contain
different types of data , such as software
programs and computer les The original .
DVD - Video format were developed in
1995. DVDs can be watched repeatedly
without reducing the quality of the video .
A standard video DVD can store 4.7 GB of
data which is enough to hold over 2 hours
of video . Some variations of DVD have
greater capacities .
A dual - layer DVD , which has two layers
of data on a single side of the disc , can
store 8.5 GB of data .
A dual - sided DVD can store 9.4 GB of data
. A dual - layer , dual - sided DVD can store
17.1GB of data DVDs are also used to
distribute software programs. Since some
applications and other software (such as
clip art collections) are too large to fit on a
single 700 MB CD, DVDs provide a way to
distribute large programs on a single disc.
way to store a large number of files and
back up data.
There are four types of DVD
DVD RAM (Random Access Memory)
DVD ROM(Read Only Memory)
DVD R(Recordable)
DVD RW(Re-Writable)
□ DVD- RAM :- DVD-RAM (Random Access Memory) can record and erase data multiple times.
□ DVD -ROM :- Data in DVD-ROM (Read Only Memory) can only be read, not written.
□ DVD-R :- DVD-R (Recordable) can record data only once and then act as a DVD-ROM.
□ DVD RW :- DVD-RW (Re-Writable) can record and erase data multiple time.
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