Computer interface, signals:
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Franking machine
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Room noise, Hard disk, write, read
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Laser printer
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Repeatedly pressing a computer mouse
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Input error sound, Pressing a keypad
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Turn off the old computer, Turn on
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Shutting, fan noise, Turning on the laptop
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Closing the laptop cover, Opening
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Insert the disk into the drive, read the
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Turn off the hard drive, Turn on
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Computer mouse click
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Opens, closes the CD / DVD tray
★★★★★