Old computer keyboard:
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Read, write, Hard disk, room noise
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Communication room, computer noise
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Bios, Sound signal of a bios computer
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Matrix printer
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Double click computer mouse
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Turning on the laptop, shutting, fan noise
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Computer mouse click
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Disc read, CD / DVD drive
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Manual copy machine
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Turn on, turn off the old computer
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Turn off the old monitor, Turn on
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Computer interface, signal read information
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