说明：  atmega8 是avr系列单片机种性价比最高的一款单片机，鉴于很多嵌入式开发人员看英文文档不是很习惯特把其中文文档给大家共享
(atmega8 is avr Series MCU species one of the highest cost performance microcontroller, As many embedded developers see that the English document is not accustomed to their Chinese special to share files)