该系统的数字电压表电路简单，可以测量0 ~ 5 V的电压值，并在四位LED数码管上轮流显示或单路选择显示。
The system's digital voltmeter circuit is simple, can measure the voltage 0 ~ 5v, and the four turns on the LED digital display or a single select Show.
数字电压表的设计与总结详细描述了直流电压的测试与显示。
This design detailed described the direct current electric voltage of the test and the manifestation.
本文向读者简要介绍如何将常见的4（1/2）位数字电压表作为A/D转换装置与显示器用于微机控制系统的方法。
The paper shows the trick of using the 41/2 Digit Panel Meter as an A/D converter and monitor in a microcomputer control system.
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