An electronic control ignition system, for internal combustion engines, is disclosed in which a rotation angle of a crank shaft of an engine is calculated. The angle is calculated based on a crank angle signal generated every time the crank shaft rotates by a certain angle. Further b
Fuel injections are sequentially effected into cylinders of a multicylinder internal combustion engine in predetermined sequence in synchronism with pulses of a predetermined crank angle position signal from engine rotational angle sensing means. If no TDC signal pulse is generated b
