Pressing a keypad, input error sound:
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Manual copy machine
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Jet printer
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Repeatedly pressing a computer mouse
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Signal read information, Computer interface
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Turn off the old computer, Turn on
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Bios, Sound signal of a bios computer
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Shutting, Turning on the computer, fan noise
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Hard disk, read, write, room noise
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Old computer keyboard
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Disc read, CD / DVD drive
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Computer interface, alarm
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Laser printer
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