Pressing a keypad, input error sound:
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Turning on the laptop, shutting, fan noise
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Floppy disk reading
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Computer interface, signals
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Computer mouse movement
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Franking machine
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Disc read, CD / DVD drive
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General noise, Office work
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Opens, closes the CD / DVD tray, disc read
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Matrix printer
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Opening, closing the laptop cover
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Computer noise, Communication room
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Repeatedly pressing a computer mouse
★★★★★