说明：  有关Atmega8的protues的仿真部分，除前言外共六部分： 1.基本IO的学习Led部分； 2.基本IO：按键部分； 3.外部中断； 4.定时，计数器； 5.串口通信； 6.IIC通信。 我是老杨，该文档的作者，这份文档是在学习单片机的时候写的，没有把计划写的写完，但这是当时写的最全的一份了。
(Atmega8 the protues relevant part of the simulation, with the exception of the foreword outside of six parts: 1. The basic IO part of the learning Led 2. The basic IO: key part of it 3. External interrupt 4. Timing, counter 5. Serial communication 6 . IIC communication. I老杨, the author of the document, this document is a time when single-chip microcomputer in learning to write, and did not plan to write the finished, but this is the most time to write a whole has.)