Computer keyboard:
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Insert the disk into the drive, read the
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Disc read, closes the CD / DVD tray, Opens
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Alarm, Computer interface
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The USB flash drive is inserted, removed
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Photocopy (photocopy)
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Closes the CD / DVD tray, Opens
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Office work, general noise
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Computer simulated laser
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Turn off the old computer, Turn on
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Jet printer
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Shutting, fan noise, Turning on the computer
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Floppy disk reading
★★★★★