The present invention enables an IC to have a fast PWM while maintaining the low frequency clock requirement of the temperature measurement. The air-blowing apparatus comprises a fan having a plurality of blades spaced apart from each other in the circumferential direction of the fan for generating a blowing force in the centrifugal direction thereof, and a diffuser disposed outside the fan in the radial direction of the fan for diffusing air blown from the fan. The resultant allograft materials have a reduced rate of rejection when used in allograft procedures including, bone, cartilage, tendon, and ligament grafting procedures. Additionally, the template may have proprietary data removed from it, and the template may be customized by adding thereto proprietary data relevant to a certain user for whom the test scenario template is customized. The first head is connected to the driving member by the first connecting mechanism and the second head is separated from the driving member in order to make the first head operate.