摘要
设计采用AT89C51单片机、A/D转换器ADC0808和共阳极数码管为主要硬件,分析了数字电压表Proteus软件仿真电路设计及编程方法。将单片机应用于测量技术中,采用ADC0808将模拟信号转化为数字信号,用AT89C51实现数据的处理,通过数码管以扫描的方式完成显示。设计的数字电压表可以测量0~5 V的电压值,AT89C51为8位单片机,当ADC0808的输入电压为5V时,输出数字量值为＋4.99V。本设计电路简单、成本低、性能稳定。
Digital voltage meter is called DVM for short.It adopts the design of digital measurement technology.The design uses AT89C51 single-chip,A/D converter ADC0808 and LED digital tube as the main hardware,and it analyzes the digital voltage meter Proteus circuit simulation software design and programming method.In the design,an AT89C51 is taken as controller,and the ADC0808 is used to convert analog signal into digital signal,and the LED is used to display the measured value by scanning.This digital voltmeter is designed to measure the voltage value of 0~5 V.AT89C51 is 8-bit microcontroller.When the ADC0808＇s input voltage is 5 V,the output digital value is ＋4.99 V.The design in this paper is simple,low cost and stable performance.
出处
《山西电子技术》
2011年第2期46-47,64,共3页
Shanxi Electronic Technology
