Floppy disk reading:
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Floppy disk reading
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Office work, general noise
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Double click computer mouse
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Photocopy (photocopy)
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Removed, The USB flash drive is inserted
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Turning on the computer, fan noise, shutting
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Manual copy machine
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Jet printer
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Signals, Computer interface
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Computer keyboard
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Turning on the laptop, shutting, fan noise
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Computer simulated laser
★★★★★