Some embodiments of the present invention provide a system and method suited for controlling the operation of an electrolyzer cell module. An audio packetized elementary stream where one packet has a stream length corresponding to the time interval of the video frame is multiplexed with the audio elementary stream, and the stream is output. In one embodiment, a user’s confidence that secondary tasks are being performed accurately is improved by providing confirmation and help for users to be more accurate on their secondary tasks. The magnetic layer is formed on an underlayer of ruthenium or the like for reducing magnetic interaction between the magnetic particles in the magnetic layer. The operation of the dishwasher can improve power consumption and dry dishes more efficiently.