Opening, closing the laptop cover:
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Turn on, turn off the old monitor
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Laser printer
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Computer keyboard
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Floppy disk reading
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Photocopy (photocopy)
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Closes the CD / DVD tray, disc read, Opens
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Alarm, Computer interface
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Signals, Computer interface
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Opens, closes the CD / DVD tray
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General noise, Office work
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Double click computer mouse
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Turning on the laptop, fan noise, shutting
★★★★★