本讲将向读者介绍另一种数据采集的方法,而由此做成的“数字电压表”可用于瞬时随机电压的测量。一、系统构成本系统是将待测电压模拟量转换成数字量,然后将该数字量送到单片机8031进行处理,处理完后,由数码管显示一个提示符,然后通过键盘分别显示被测电压的瞬时值、最大值、最小值、平均值及有效 This talk will introduce readers to another method of data acquisition, and the resulting “digital voltmeter” can be used for instantaneous random voltage measurement. First, the system structure The system is to be measured voltage analog converted to digital, and then the digital sent to the microcontroller 8031 ​​for processing, the digital tube display a prompt, and then through the keyboard to display the measured voltage The instantaneous, maximum, minimum, average and effective