Turning on the laptop, fan noise, shutting down:
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Computer mouse click
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Floppy disk reading
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Bios, Sound signal of a bios computer
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Interference, signal, Modem connection
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Manual copy machine
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Turn off the hard drive, Turn on
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Signals, Computer interface
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Turning on the laptop, shutting, fan noise
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Computer mouse movement
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Matrix printer
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Fan noise, Turning on the computer, shutting
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Old computer keyboard
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