Hard disk, read, write, room noise:
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Read, room noise, Hard disk, write
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Computer mouse click
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Computer simulated laser
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Turning on the laptop, fan noise, shutting
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Computer interface, signals
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Opening, closing the laptop cover
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Signal read information, Computer interface
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Turn off the old monitor, Turn on
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Signal, Modem connection, interference
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Bios, Sound signal of a bios computer
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Floppy disk reading
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Jet printer
★★★★★