COMPUTER HARDWARE COMPONENTS FUNCTIONS
COMPUTER OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Compact Disc (CD)
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Blu-ray Disc (BD)
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Digital Video Disc (DVD)
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None of the above
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Detailed explanation-1: -The CD and DVD are the optical recording medium where CD was devised as an audio storage format while DVD is used as the universal storage format. The latter technology DVD can hold data about 7 times more than CD and its format efficiency is also 32% greater than a CD.
Detailed explanation-2: -The size of a typical CD is about 700 MB. The size of a given DVD is about 4.7 – 17 GB in range.
Detailed explanation-3: -A standard single-sided, one-layer DVD can hold 4.7 gigabytes of data and 8.5 GB if it’s a double-layer disc. A single-layer HD-DVD stores up to 15 GB of storage capacity, and a dual-layer disk provides up to 30 GB.
Detailed explanation-4: -A CD-ROM drive uses a low-power laser beam to read digitized (binary) data that has been encoded in the form of tiny pits on an optical disk. The drive then feeds the data to a computer for processing. The standard compact disc was introduced in 1982 for digital audio reproduction.
Detailed explanation-5: -Optical storage is any storage type in which data is written and read with a laser. Typically, data is written to optical media such as compact discs (CDs) and digital versatile discs (DVDs).