The invention realizes the execution of a predetermined process just before the turn-off of the power of a computer, without incurring increase in the load. A bottom portion of the floor member is formed with a plurality of moisture dispersal pathways that lead toward peripheral side edges of the bottom portion. The translation circuit may be configured to generate a one or more second control signals in response to the one or more first control signals and the write address signal. The rest periods are established by optimizing between minimization of disruption to normal operation and a need to update a measurement of the state of the energy storage device.