Design of Digital Voltmeter based on Single Chip Microcomputer

10.6919/ICJE.202205_8(5).0061

Wenchao Jia；Heng Chen；Yuan Ji；Housheng Li

Single Chip Microcomputer ； A/D Conversion ； LCD Display

International Core Journal of Engineering

8卷5期（2022 / 05 / 01）

481 - 484

英文

When we do electrical tests, we often need to measure the voltage of resistance, capacitance or other components to judge the quality of components, but the accuracy of measuring instruments is usually limited. To solve this problem, considering the characteristics of low voltage of components measured in general electrical experiments, this paper uses AT89C52 single chip microcomputer as the control platform to design a practical LCD display digital voltmeter. The A/D conversion and LCD display circuit are mainly designed. This digital voltmeter can measure the voltage value of components with high precision and has the characteristics of high sensitivity.

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