Photocopy (photocopy):
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Franking machine
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Typewriter, Office work, environmental sounds
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Signal read information, Computer interface
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Bios, Sound signal of a bios computer
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Computer keyboard
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Shutting, Turning on the computer, fan noise
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Jet printer
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Repeatedly pressing a computer mouse
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Double click computer mouse
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Computer mouse movement
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Signal, interference, Modem connection
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Floppy disk reading
★★★★★