Opening, closing the laptop cover:
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Turn off the hard drive, Turn on
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CD / DVD drive, disc read
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Double click computer mouse
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Computer mouse click
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Computer simulated laser
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Environmental sounds, typewriter, Office work
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Computer interface, alarm
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Closing the laptop cover, Opening
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Signal, interference, Modem connection
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Franking machine
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Sound signal of a bios computer, bios
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Removed, The USB flash drive is inserted
★★★★★