The present invention relates to the use of puroindolines as additives in biscuit manufacture. Furthermore, the fin and tube type heat-exchanger can obtain the optimum heat-exchange efficiency, reduce the manufacturing cost and adapt to alternative refrigerants. To a gate terminal of a TFT T8, a signal outputted from the additional output terminal Z included in a next stage unit circuit is supplied. Moreover, the switch minimizes signal distortion in the selected transducers, and alternatively, the switch eliminates signal output to the non-selected transducers.