Opens, closes the CD / DVD tray, disc read:
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Computer simulated laser
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Photocopy (photocopy)
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Laser printer
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Closing the laptop cover, Opening
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Insert the disk into the drive, read the
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Manual copy machine
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Input error sound, Pressing a keypad
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Closes the CD / DVD tray, Opens
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Floppy disk reading
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Computer interface, signals
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Jet printer
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Double click computer mouse
★★★★★