A printed circuit board unit includes an insulated film disposed between a printed circuit board and an electronic component so as to define a through hole for receiving the solder bump. For example, the compound FTY720 specifically directs lymphocytes to the peripheral lymph nodes, mesenteric lymph nodes, and Peyer’s patches. The controller may isolate the back-up battery from the power load as a voltage of the vehicle battery drops until reaching a threshold. First to M-th driving circuits drive respective regions M of at least part of the display block formed by dividing the at least part of the display block. The invention also includes the method for evaluating design andor quality control of a sport ball by measuring the internal vibration and determining the critical ratio of the sport ball.