Franking machine:
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The USB flash drive is inserted, removed
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Double click computer mouse
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Computer keyboard
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Signals, Computer interface
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Computer mouse movement
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Franking machine
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Turn on, turn off the old computer
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Closing the laptop cover, Opening
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Communication room, computer noise
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Photocopy (photocopy)
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Read, write, room noise, Hard disk
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Jet printer
★★★★★