Computer interface, signals:
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Computer noise, Communication room
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Closes the CD / DVD tray, Opens, disc read
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Opening, closing the laptop cover
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Insert the disk into the drive, read the
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Jet printer
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Repeatedly pressing a computer mouse
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General noise, Office work
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Turn on, turn off the old monitor
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Turn off the old computer, Turn on
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Manual copy machine
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Laser printer
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Matrix printer
★★★★★