Semiconductor devices and methods are disclosed including switch circuitry providing improved switching performance. In a case of inputting data where one pixel is expressed by, e. Moreover, the pumping chamber of each of the pumping units is connected to a circuit comprising, successively, a conduit that opens into a container of rinsing liquid, three successive solenoid valves and a portion of circuit which connects the second solenoid valve with the pipetting means. The audio signal is then outputted from the portable device to an external computer, which can remove the security layer to access the audio content within the audio signal.