实现了单片机与数码管连接，且数码管动态显示0-F十六个字符-To achieve a single-chip and digital control, and the digital tube dynamic display 0-F sixteen characters

制作PCB时，解决可能出现不能识别汉字、添加任意图案LOGO的问题。(When making PCB, we can solve the problem that can not recognize Chinese characters and add arbitrary pattern LOGO.)