Turn on, turn off the old monitor:
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Computer noise, Communication room
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Double click computer mouse
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Computer interface, signals
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Closes the CD / DVD tray, Opens
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Jet printer
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General noise, Office work
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Turn off the hard drive, Turn on
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Opening, closing the laptop cover
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Office work, typewriter, environmental sounds
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Laser printer
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Signal read information, Computer interface
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Shutting, fan noise, Turning on the laptop
★★★★★