Turning on the laptop, fan noise, shutting down:
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Matrix printer
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Insert the disk into the drive, read the
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Turn on, turn off the old computer
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Computer keyboard
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Computer interface, signal read information
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Manual copy machine
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Computer noise, Communication room
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Environmental sounds, Office work, typewriter
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Floppy disk reading
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Repeatedly pressing a computer mouse
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Turn off the hard drive, Turn on
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Opens, closes the CD / DVD tray
★★★★★