When ignition timing is detected based on counting the number of position signals POS10 after the reference position signal REF, the ignition timing control signal is output to the power transistor in {HEAD ~ the ignition coil} 9 and ignition timing is controlled by {TAIL ~ the ignition plug} 6 
When ignition timing is detected based on counting the number of position signals POS10 after the reference position signal REF , the ignition timing control signal is output to the power transistor in { HEAD ~ the ignition coil } 9 and ignition timing is controlled by { TAIL ~ the ignition plug } 6
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH