Franking machine:
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Read the, Insert the disk into the drive
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Computer interface, alarm
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Environmental sounds, Office work, typewriter
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Manual copy machine
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Turn off the old computer, Turn on
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Laser printer
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Signal read information, Computer interface
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Input error sound, Pressing a keypad
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Computer mouse movement
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Matrix printer
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Room noise, read, write, Hard disk
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Computer simulated laser
★★★★★