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Hard disk uses several magnetic devices. Magnetically semi-hard coating is magnetised and demagnetised to store the information. Reading and writing is performed by a magnetic head, which can generate strong magnetic field to erase, and magnetic sensor to read the bits of information. The main plates are rotated by an electric motor. The read/write head is moved by an electromagnetic actuator.


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S. Zurek, Encyclopedia Magnetica, CC-BY-4.0

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file/hard_drive_with_ide_magnetica_jpg.txt ยท Last modified: 2021/04/03 01:20 (external edit)

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