Franking machine:
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Opening, closing the laptop cover
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Old computer keyboard
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Manual copy machine
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Jet printer
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Room noise, write, read, Hard disk
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Computer simulated laser
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Interference, Modem connection, signal
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Repeatedly pressing a computer mouse
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Computer mouse movement
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Read the, Insert the disk into the drive
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Franking machine
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Floppy disk reading
★★★★★