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Frequency Modulation (FM) is one of the earliest techniques for encoding data in magnetic storage devices, e. g. floppy disk drives. The figure below shows a waveform written to store an ASCII character on a hard disk using FM. Retrieve the binary number. T = Transition (magnetic flux reversal) N = No transition

Frequency Modulation (FM) is one of the earliest techniques for encoding data in magnetic storage devices, e. g. floppy disk drives. The figure below shows a waveform written to store an ASCII character on a hard disk using FM. Retrieve the binary number. T = Transition (magnetic flux reversal) N = No transition

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Frequency Modulation (FM) is one of the earliest techniques for encoding data in magnetic storage devices, e.g. floppy disk drives. The figure below shows a waveform written to store an ASCII character on a hard disk using FM. Retrieve the binary number. T = Transition (magnetic flux reversal) N = No transition

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