Opening, closing the laptop cover:
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Signals, Computer interface
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Computer interface, signal read information
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Insert the disk into the drive, read the
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Disc read, CD / DVD drive
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Photocopy (photocopy)
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Environmental sounds, Office work, typewriter
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Turning on the computer, shutting, fan noise
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Computer simulated laser
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The USB flash drive is inserted, removed
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Turn on, turn off the hard drive
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Turn off the old monitor, Turn on
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Old computer keyboard
★★★★★