用汇编语言编写的数字电压表，在protues环境下调试通过。分辨率：1mV，上下限报警功能，可调上下限，前置信号调理电路，AD转换器采用MAX1241，可与上位机通信，将实时数据上传。-Written in assembly language of the digital voltmeter, protues environment through debugging. Resolution: 1mV, upper and lower alarm function, adjustable upper and lower limits, the pre-signal conditioning circuit, AD converter using the MAX1241, with the host computer communications, real-time data upload.