Computer interface, signal read information:
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Matrix printer
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Opening, closing the laptop cover
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Computer interface, alarm
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Photocopy (photocopy)
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Closes the CD / DVD tray, Opens
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The USB flash drive is inserted, removed
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Repeatedly pressing a computer mouse
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Typewriter, Office work, environmental sounds
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Turn on, turn off the old monitor
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Turning on the laptop, fan noise, shutting
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Computer simulated laser
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CD / DVD drive, disc read
★★★★★