Computer mouse movement:
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Removed, The USB flash drive is inserted
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Computer keyboard
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Opens, closes the CD / DVD tray
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Laser printer
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Turning on the laptop, fan noise, shutting
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Typewriter, environmental sounds, Office work
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Turn off the old monitor, Turn on
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Computer simulated laser
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Old computer keyboard
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Matrix printer
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Turn off the old computer, Turn on
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Manual copy machine
★★★★★