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We can
say that optical drives are the essential parts for a computer otherwise we cannot
even install the operating system in our computers.
A DVD Drive
is used for reading DVD information.
We can also read CD
information using these DVD Drives as they are backward compatible with the CD Drives.
DVD Drives are expensive compared to CD Drives. Some of the manufacturers of optical
drives are Sony, Dell, LG, HP, Samsung, Pioneer etc.
CD-ROM
Drives: For playing music CDs and standard software CDs.
CD burners:
For backing up smaller amounts of data.
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DVD Drives:
For playing videos.
DVD burners:
For backing up huge amounts of data like movies.
The rate
at which the disc information is transferred to/from an optical drive from/to the
computer is expressed as multiple of X generally. In a
CD Drive
, X is equal to 150 KB/s. For example,
2X CD Drive
reads 300 KB/s. In a
DVD Drive
, X is same as approximately 9X in a CD drive. Now-a-days,
we can get 52 X CD Drives and 48 X DVD Drives. The transfer rate of at least 40X
is used for supporting multimedia and games efficiently.
External or Internal:
Generally
most of the computers have internal DVD/CD Drives. If our computer does not have
an internal
DVD/CD Drive
, we can go for an external Drive. The external DVD/CD
Drives are usually portable, expensive and slower than the internal ones. Internal
DVD/CD drives are suitable to desktops as they are not portable.
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