Computer interface, signal read information:
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Sound signal of a bios computer, bios
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Computer noise, Communication room
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Input error sound, Pressing a keypad
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Repeatedly pressing a computer mouse
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Turn off the hard drive, Turn on
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Laser printer
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Disc read, CD / DVD drive
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Opening, closing the laptop cover
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Turn off the old monitor, Turn on
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Computer simulated laser
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Jet printer
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Manual copy machine
★★★★★
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