Pressing a keypad, input error sound:
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Repeatedly pressing a computer mouse
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Input error sound, Pressing a keypad
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Computer simulated laser
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Signal read information, Computer interface
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Alarm, Computer interface
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Jet printer
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General noise, Office work
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Double click computer mouse
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Signals, Computer interface
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CD / DVD drive, disc read
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The USB flash drive is inserted, removed
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Manual copy machine
★★★★★