In a fluorescent X-ray analysis method, a sample is set on a sample stage on an upper side of an X-ray irradiation chamber and a sample cover is closed from the upper part of the sample to surround the sample, and then, a lower plane of the sample is irradiated with X-ray for analysis. A working volume ratio of the positive active material and the negative active material obtained by the positive active material weight being divided by the negative active material weight is within the range from 40% to 90% of the theoretical working volume ratio. A thread requesting the lock selects one of the nodes, attempts to acquire the selected node, and, if successful, inserts the selected node in a wait-queue for the lock. The second AC-coupled transmitter includes a second driver having a second input to receive second data, and a second output.