COMPUTER ARCHITECTURE
SECONDARY STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In the CPU
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In ‘marks’ arranged in patterns
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In different patterns of magnetisation in a magnetisable material to store data (tape/hard disk).
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Using a large electric current to force electrons through a barrier and trapping them in position.
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Detailed explanation-1: -A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors. Hard disks, zip disks and floppy disks are common examples of magnetic disks.
Detailed explanation-2: -Magnetic storage medium. Hard drives use magnetism to store information in a layer of magentic material below the surface of the spinning disk. If you were to look at high magnification at the surface of the platter of a typical hard disk, you would see images similar to those on the right.
Detailed explanation-3: -HDDs consume a certain amount of power because they are still running even while idling (as well as while recording/reproducing). In contrast, magnetic tape systems rarely require power while idling, and no electricity cost is required for maintaining media.