Pressing a keypad, input error sound:
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Computer interface, signals
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Turn off the hard drive, Turn on
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Room noise, read, write, Hard disk
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Insert the disk into the drive, read the
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Computer mouse click
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Old computer keyboard
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Photocopy (photocopy)
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Turn off the old computer, Turn on
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Computer noise, Communication room
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Repeatedly pressing a computer mouse
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Pressing a keypad, input error sound
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Environmental sounds, Office work, typewriter
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