Franking machine:
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Repeatedly pressing a computer mouse
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Typewriter, Office work, environmental sounds
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Floppy disk reading
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Computer mouse click
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Interference, Modem connection, signal
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CD / DVD drive, disc read
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Laser printer
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Sound signal of a bios computer, bios
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Manual copy machine
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Computer simulated laser
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Turn off the old computer, Turn on
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Computer keyboard
★★★★★