Old computer keyboard:
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Computer simulated laser
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Computer keyboard
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Franking machine
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Manual copy machine
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Turn off the old computer, Turn on
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Interference, signal, Modem connection
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Room noise, write, Hard disk, read
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Old computer keyboard
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Computer interface, signals
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Matrix printer
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CD / DVD drive, disc read
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Fan noise, Turning on the laptop, shutting
★★★★★