Modem connection, signal, interference:
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Write, Hard disk, room noise, read
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Signal read information, Computer interface
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Alarm, Computer interface
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Franking machine
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Opening, closing the laptop cover
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Modem connection, signal, interference
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Laser printer
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Turn off the old monitor, Turn on
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Computer mouse movement
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Communication room, computer noise
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Computer simulated laser
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Bios, Sound signal of a bios computer
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