程序功能为基于10位的高精度DAC数模转换器，实现频率比较高的周期周期性信号输出，分别实现锯齿波和三角波输出，通过控制插入的软件延时可以达到调节输出信号频率的目的。-Program function is based on 10-bit precision DAC digital-to-analog converter, to achieve a relatively high frequency periodic periodic signal output, respectively, to achieve the sawtooth and triangular wave output, to achieve the purpose of regulating the output frequency of the signal delay can be inserted through the control software.