说明：  PT16312驱动程序，现在80%的家电VFD（荧光显示屏）都用它做驱动IC驱动！外部可接24个按键和8个口线。
(PT16312 driver, now 80% of the appliance VFD (Fluorescent Display) are using it so driver ICs drive! External access the 24 keys and eight mouth lines.)