基于Proteus的数字电压表设计

he system consists of single-chip system, signal input circuit, A/D converter circuit and LED display circuit. It can measure the voltage value of the line which has a low voltage with high measurement accuracy, this can satisfy the measurement requirement of common electronic system’s voltage. In addition, the system leaves extensible interface in order to expand other functions according to actual circumstances easily. Simulation debugging through Proteus, the system has achieved good results.