COMPUTER ARCHITECTURE
MEMORY SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Motor
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Platter
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Read-write head
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ALU
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Laser
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Detailed explanation-1: -The optical path is composed of three components: a laser, a lens, and a photodiode. The laser writes and reads the data. The lens guides the laser across the surface of the disc. Lastly, the photodiode detects light reflected off the disc’s surface.
Detailed explanation-2: -An optical disk drive uses a laser beam to read the data from the disk as it is spinning.
Detailed explanation-3: -Conventional optical technologies such as CD, DVD and magneto-optical (MO) drives write data using red lasers.
Detailed explanation-4: -These include CDs, DVDs, and Blu-ray discs. This allows you to play music or watch movies using pre-recorded discs. An optical disc is designed to support one of three recording types: read-only (e.g.: CD and CD-ROM), recordable (write-once, e.g. CD-R), or re-recordable (rewritable, e.g. CD-RW).