COMPUTER HARDWARE
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 name “Blu-ray” refers to the blue laser (actually a violet laser) used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs.
Detailed explanation-2: -The Blu-Ray disc (BD)format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data.
Detailed explanation-3: -Because the blue light laser used with Blu-ray discs has a shorter wavelength than red laser light, 25 GBs of storage can be encoded on a single layer of a 12 cm Blu-ray disc.
Detailed explanation-4: -While current optical disc technologies such as DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red laser to read and write data, the new format uses a blue-violet laser instead, hence the name Blu-ray.