A pinion gear is fixed on a rotating shaft of a motor for supplying a driving force of a plurality of driving mechanisms. The method is an improved multi-stage dynamic thresholding series of steps applied to monochromatic gray-scale values of color channels of digital image of tissue. The input parameter values that produce the best results for an output metric are then chosen to synthesis and place the circuit design on the programmable integrated circuit. The clip is shaped to allow the acupuncture needle to exit the guide tube at an angle. Even in the case of a terminal having only a touch panel of a limited size, an operation image having a size that affects the progress of a game as little as possible is displayed on the touch panel by superimposing the operation image on a game display screen at a position that affects the progress of the game as little as possible.