A fuel delivery approach for an engine includes delivering a first fuel blend from a first, lower alcohol fuel tank to a port injector; delivering a second, higher alcohol, fuel to a direct injector, and transferring the first fuel from the first tank to the second tank so that the first tank is emptied before the second. Also, an idle period, which is longer than a scanning period for scanning the screen once and during which period all scanning signal lines are in the state of non-scanning, is provided, and the scanning period and the idle period constitute one vertical period. A reactive circuit is connected to the voltage amplifying and comparing circuit. Each property associated with each element type is included in the list.