Turn on, turn off the old monitor:
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Computer interface, signal read information
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Manual copy machine
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Turn on, turn off the old monitor
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Repeatedly pressing a computer mouse
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Modem connection, interference, signal
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Insert the disk into the drive, read the
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Communication room, computer noise
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Computer mouse click
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Franking machine
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Removed, The USB flash drive is inserted
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CD / DVD drive, disc read
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Environmental sounds, typewriter, Office work
★★★★★