Franking machine:
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Turning on the laptop, shutting, fan noise
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The USB flash drive is inserted, removed
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Sound signal of a bios computer, bios
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Turn on, turn off the old monitor
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Closes the CD / DVD tray, Opens
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Opens, disc read, closes the CD / DVD tray
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Room noise, read, write, Hard disk
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General noise, Office work
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Turn off the hard drive, Turn on
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Franking machine
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Shutting, fan noise, Turning on the computer
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Signals, Computer interface
★★★★★