In a Uniform Extensible Firmware Interface environment, a system management mode driver and a non-SMM driver may be installed for the same hardware device. Each memory cell is adapted to receive charge during a write operation to an analog voltage that corresponds to a data value having a binary representation of more than 4 bits. The devices, methods, and programs determine whether a fuel consumption reduction effect is obtained based on the engine-start fuel consumption and the fuel consumption if idling were to be continued, and provide guidance based on the determination of whether the fuel consumption reduction effect is obtained. An output rate of measurement values is programmable by the measuring unit setting a smallest base clock and passing an updated measurement value to the control after a multiple of the base clock corresponding to the programmed output rate.