Franking machine:
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Interference, Modem connection, signal
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Read the, Insert the disk into the drive
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Opens, closes the CD / DVD tray
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Computer keyboard
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Matrix printer
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Signals, Computer interface
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Computer mouse click
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Photocopy (photocopy)
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Office work, general noise
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Communication room, computer noise
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Signal read information, Computer interface
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Turning on the computer, fan noise, shutting
★★★★★