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)

树莓派Python编程指南，适合于新手学习和便捷查询(Raspberry pie Python programming guide, suitable for novice learning and convenient query)