Franking machine:
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Double click computer mouse
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Old computer keyboard
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Turn off the old computer, Turn on
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Insert the disk into the drive, read the
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Jet printer
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Communication room, computer noise
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Read, write, room noise, Hard disk
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Input error sound, Pressing a keypad
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Computer mouse movement
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The USB flash drive is inserted, removed
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CD / DVD drive, disc read
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Laser printer
★★★★★