实现AVR的AD转换，调试过的可以使用帮助大家一起学习AVR一起分享啊！

详细的讲解了如何利用avr单片机完成ad、da转换，包含编程范例，讲解过程简单易懂-In detail how to use avr complete single-chip ad, da converters, including programming examples, explain the process of easy-to-read

大部分AVR内部带有AD，本节以使用ATMEGA16的内部AD为例，给出AD转换中断程序-Most of the AVR with internal AD in this section to the using ATMEGA16 internal AD, for example, given the AD conversion interrupt routine.