AVR单片机片内AD转换资源，详细介绍了如何驱动数模转换器的功能-AVR microcontroller pieces AD transform resources, introduces in detail how to drive digital-to-analog converters functions

avr单片机的键盘扫描及lcd和led显示-avr Singlechip keyboard scanning and lcd and led display

avr单片机中断test程序,详细说明 含工程文件-avr Singlechip interruption test procedures, engineering documents containing a detailed descr iption

针对AVR ATXMEGA128A1单片机的BOOTLOADER自编程程序工程。已测试通过，稍微做改动也可以作为别的AVR型号自编程用。-For AVR ATXMEGA128A1 microcontroller BOOTLOADER self-programming program works. Have been tested, do a little changes that can be used as self-programming with other AVR models.