In one embodiment, a system for controlling an apparatus driven by a battery, the system operating by the battery, includes a computer to control the apparatus, a control signal circuit to send a signal from the computer to the apparatus so as to control the apparatus, and a nonvolatile memory circuit to store an operating state of the computer. The operating state includes a first operating state and a second operating state, the computer sets the apparatus to a low load state in accordance with the operating state and controls the apparatus when the computer is reset for shutdown due to a decrease of the residual quantity of the battery and is restarted for power-on.