Franking machine:
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Turn off the old computer, Turn on
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Turn off the old monitor, Turn on
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CD / DVD drive, disc read
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Turn on, turn off the hard drive
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Turning on the laptop, shutting, fan noise
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Matrix printer
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Pressing a keypad, input error sound
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Removed, The USB flash drive is inserted
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Opening, closing the laptop cover
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Fan noise, shutting, Turning on the computer
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Jet printer
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Computer simulated laser
★★★★★