COMPUTER HARDWARE COMPONENTS FUNCTIONS
EXTERNAL AND INTERNAL STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Spinning discs that contain tracks and sectors
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Floating gates to trap electrons
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A read-write head that moves across the magnetic discs
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Has pits and lands that represent 0 or 1
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Detailed explanation-1: -As the disk is spinning, a read/write head moves across its surface. To write data, the head magnetises or demagnetises a section of the disk that is spinning under it. To read data, the head makes a note of whether the section is magnetised or not. Magnetic devices are fairly cheap, high in capacity and durable.
Detailed explanation-2: -The mechanical arm is used to read from and write to the disk. The data on a magnetic disk is read and written using a magnetization process. The platter keeps spinning at high speed while the head of the arm moves across its surface. Since the whole device is hermetically sealed, the head floats on a thin film of air.
Detailed explanation-3: -hard disk is a storage device that uses rigid, permanently installed magnetic disks to store data. it is a magnetic disk on which you can store data .
Detailed explanation-4: -Magnetic storage: Hard Disc Drive (HDD) Relatively cheap per unit of storage. Fast access and retrieval times compared to other storage devices. Can be easily damaged, will slow down and eventually break over time. Slower access than Solid State Drives.