Pressing a keypad, input error sound:
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Interference, signal, Modem connection
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Repeatedly pressing a computer mouse
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Disc read, CD / DVD drive
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Read the, Insert the disk into the drive
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Turn on, turn off the hard drive
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Double click computer mouse
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Computer simulated laser
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Signals, Computer interface
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The USB flash drive is inserted, removed
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Franking machine
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Closes the CD / DVD tray, Opens
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Jet printer
★★★★★