Pressing a keypad, input error sound:
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Computer mouse click
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Computer simulated laser
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Computer keyboard
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Turn off the old monitor, Turn on
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Insert the disk into the drive, read the
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Computer interface, signal read information
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The USB flash drive is inserted, removed
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Computer interface, signals
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Closes the CD / DVD tray, Opens
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Repeatedly pressing a computer mouse
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General noise, Office work
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Turn on, turn off the hard drive
★★★★★