实现基于树莓派的共阴4位数码管驱动，使用语言为PYTHON,使用硬件资源为树莓派GPIO，面包板和杜邦线若干(Implementation of the raspberry based 4 bit digital tube drive)

世界上最小的电脑，卡片机，用目前第四编程语言编程指南，里边各种详细例程(The world's smallest computer, card machine, with the current fourth programming language programming guide, inside a variety of detailed routines)