51单片机数字电压表设计

摘 要

   本课题是利用单片机设计一个数字电压表，能够测量0－5V之间的直流电压值，四位数码管显示，使用的元器件数目较少。外界电压模拟量输入到A/D转换部分的输入端，通过ADC0832转换变为数字信号，输送给单片机。然后由单片机给数码管数字信号，控制其发光，从而显示数字。此外，本文还讨论了设计过程中的所用的软件硬件环境，调试所出现的问题等。

关键词：单片机； AT89C51；数字电压表； ADC0832,四位数码管。

   

    This topic is the use of microcontroller design a digital voltmeter, capable of measuring between 0-5V DC voltage, four digital display, the use of fewer components. External analog voltage input to the A / D conversion part of the input of the conversion into a digital signal through the ADC0832, transmission to the microcontroller. And then by the microcontroller to the digital control digital signal, control the light, so the displayed number. In addition, the article also discusses the design process of software used in the hardware environment, debugging the problems and so on.

Key words: SCM; AT89C51; digital voltmeter; ADC0832, four digital.