Computer interface, signal read information:
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Laser printer
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Shutting, Turning on the computer, fan noise
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General noise, Office work
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Repeatedly pressing a computer mouse
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Signal read information, Computer interface
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Removed, The USB flash drive is inserted
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Manual copy machine
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Shutting, Turning on the laptop, fan noise
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Bios, Sound signal of a bios computer
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Floppy disk reading
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Computer mouse click
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Turn on, turn off the old monitor
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