Computer simulated laser:
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Disc read, closes the CD / DVD tray, Opens
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Computer interface, signals
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Pressing a keypad, input error sound
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Repeatedly pressing a computer mouse
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Alarm, Computer interface
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Computer mouse click
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Closing the laptop cover, Opening
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Manual copy machine
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Photocopy (photocopy)
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Jet printer
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Turn off the old monitor, Turn on
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Signal read information, Computer interface
★★★★★