An electronic learningteaching device operates with and without a printed sheet element having an arrangement of selectable content by means of a user responsive sensor array beneath a surface configured to receive the element. The detection circuit detects whether the differential signal becomes outside an electric input standard and outputs the detection signal. The light emitting device, which is disposed in the inside space of the capsule endoscope, emits light to an object through the transparent cover. The invention also relates to soybean cultivars or breeding cultivars, and plant parts derived from soybean cultivar 21150231. The third element extends comprising a third connector of a third passive element.