Pressing a keypad, input error sound:
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Turn on, turn off the old monitor
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Manual copy machine
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Franking machine
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Computer keyboard
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CD / DVD drive, disc read
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Computer interface, signal read information
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Disc read, closes the CD / DVD tray, Opens
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Repeatedly pressing a computer mouse
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Sound signal of a bios computer, bios
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General noise, Office work
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Turn on, turn off the old computer
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Fan noise, Turning on the computer, shutting
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