Opening, closing the laptop cover:
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Turn on, turn off the hard drive
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Computer noise, Communication room
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Computer simulated laser
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Opens, closes the CD / DVD tray
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Floppy disk reading
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Photocopy (photocopy)
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Computer interface, signals
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Signal, interference, Modem connection
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Bios, Sound signal of a bios computer
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Turn off the old monitor, Turn on
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The USB flash drive is inserted, removed
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Franking machine
★★★★★