Turn on, turn off the hard drive:
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Signal read information, Computer interface
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Disc read, CD / DVD drive
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Manual copy machine
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Computer mouse click
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Insert the disk into the drive, read the
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Floppy disk reading
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Jet printer
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Turn off the old monitor, Turn on
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Communication room, computer noise
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Shutting, fan noise, Turning on the laptop
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Closing the laptop cover, Opening
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Closes the CD / DVD tray, Opens
★★★★★