Pressing a keypad, input error sound:
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Signal, interference, Modem connection
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Shutting, fan noise, Turning on the computer
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Jet printer
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Computer mouse click
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Computer interface, alarm
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Pressing a keypad, input error sound
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Old computer keyboard
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Turn off the old monitor, Turn on
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Closes the CD / DVD tray, disc read, Opens
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Closing the laptop cover, Opening
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Computer simulated laser
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Photocopy (photocopy)
★★★★★