从setup文件中读取文件参数 计算中断参数 通过8254定时器和8259中断控制器实现定时中断 将A/D采集到的数据解码成电压值绘制成图像 文件在TurboC下运行(Read file parametersom from the setup file, and then calculate interrupt parameters. Achieve a regular interrupt through the 8254 timer and 8259 interrupt controller. The data collected by A/D is decoded into voltage in order to plot. The file can be runned under TurboC.)