Opening, closing the laptop cover:
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CD / DVD drive, disc read
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Manual copy machine
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Opens, closes the CD / DVD tray, disc read
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Matrix printer
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Shutting, fan noise, Turning on the laptop
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Computer simulated laser
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Turn off the hard drive, Turn on
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Laser printer
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Photocopy (photocopy)
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Turn off the old computer, Turn on
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Room noise, read, write, Hard disk
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Old computer keyboard
★★★★★