Opens, closes the CD / DVD tray, disc read:
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Matrix printer
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Laser printer
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Shutting, fan noise, Turning on the laptop
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Computer interface, signals
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Environmental sounds, Office work, typewriter
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Turn off the old monitor, Turn on
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Computer interface, signal read information
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Floppy disk reading
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Turn off the hard drive, Turn on
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Insert the disk into the drive, read the
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Old computer keyboard
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General noise, Office work
★★★★★