Computer interface, signals:
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Turn off the old monitor, Turn on
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Read the, Insert the disk into the drive
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Matrix printer
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Computer simulated laser
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Signal read information, Computer interface
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Pressing a keypad, input error sound
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Jet printer
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Franking machine
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Repeatedly pressing a computer mouse
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CD / DVD drive, disc read
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Computer noise, Communication room
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Opening, closing the laptop cover
★★★★★
