A flyback boost circuit includes an output voltage detection terminal provided to a secondary winding of a transformer of the flyback boost circuit, and configured to detect an output voltage. The secondary battery control circuit includes a temperature detection section for detecting a temperature of the secondary battery and a system logic for controlling chargingdischarging of the secondary battery based on the temperature detected by the temperature detection section. The X and Y coordinates corresponding to each illuminated area are triangulated so as to create a mesh of triangles representing the terrain surface, each of the triangles in the mesh being defined by a vertex triplet. The instant invention also provides methods for the modification of fatty acid compositions in host plant cells. The mobile terminal includes a touchscreen and a control unit for receiving a first command according to a state of an object in near-proximity to the touchscreen, and receiving a second command according to a state of the object contacting the touchscreen.