说明：  ADC0809是一款8通道复用的8位AD转换器，数据获取的关键部分是它的8位模/数转换器。这个部分主要是由3部分组成：256R的阶梯网络，连续逼近的电阻，和比较器。 ADC0809在单片机上的应用,C语言源码,Keil uVision3工程文件,附原理图及说明学习文档
(ADC0809 is an 8-channel multiplexed 8-bit AD converter, data acquisition is a key part of its 8-bit A/D converter. This part is mainly composed of 3 parts: 256R ladder network, successive approximation of resistance, and comparators. ADC0809 in SCM applications, C language source code, Keil uVision3 project file, with schematic diagram and description of study documents)