Hard disk, read, write, room noise:
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Alarm, Computer interface
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Matrix printer
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Communication room, computer noise
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Floppy disk reading
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Computer keyboard
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Repeatedly pressing a computer mouse
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Disc read, Opens, closes the CD / DVD tray
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Turn off the hard drive, Turn on
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Signal read information, Computer interface
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Insert the disk into the drive, read the
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Disc read, CD / DVD drive
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Manual copy machine
★★★★★