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提出了一种提高8098单片机双极性输入A/D转换分辨率的简单实用的软件和硬件设计方法,解决了用一路A/D转换通道分时转换多路双极性模拟输入量。文中给出了硬件电路图及软件程序清单,最后对在工程应用中可能出现的问题提出了解决方法。
A simple and practical software and hardware design method to improve the resolution of bipolar input A / D conversion of 8098 single-chip microcomputer is proposed. The method solves the problem of time-sharing multiple bipolar analog input with one A / D conversion channel. The hardware circuit diagram and software program list are given in the paper. Finally, some solutions to the problems that may occur in the engineering application are proposed.