说明：  ADC0809A/D转换器基本知识，电路原理图，硬件连线说明，完整的汇编源程序和C语言源程序，都一并放在word文件里面了
(ADC0809A/D converter basic knowledge of circuit schematics, hardware description to connect a complete compilation of source code and C language source code, are placed together inside a word document)