AVR单片机的实验代码，经过测试可以用的。包括普通IO口实验、定时器实验、数码管显示实验、AD转换并显示实验和EEPROM 读写实验.不但有代码，还有简单解释和原理说明-AVR microcontroller experimental code, tested can be used. Including general IO port test, test timer, digital display experiment, AD conversion and display experimental and EEPROM read and write experiments. Not only code, there are simple principles of interpretation and explanation