INPUTOUTPUT AND STORAGE DEVICES
STORAGE DEVICES HARD DISK SSD AND FLASH MEMORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Optical drives read information using a
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memory chip
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magnetic sensor
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laser sensor
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binary code
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Explanation:
Detailed explanation-1: -An optical disk drive uses a laser beam to read the data from the disk as it is spinning. It distinguishes between the pits and lands based on how the light reflects off the recording material. The drive uses the differences in reflectivity to determine the 0 and 1 bits that represent the data.
Detailed explanation-2: -Conventional optical technologies such as CD, DVD and magneto-optical (MO) drives write data using red lasers.
Detailed explanation-3: -Data Is Recorded as Pits on the Inner Face of Discs When CD data is read, laser light is focused through the clear plastic layer, and data gathered by reading the differences in reflected light intensities from the aluminum layer caused by the pits.
There is 1 question to complete.