基于单片机的数字电压表设计——毕业论文设计摘要

"基于单片机的数字电压表设计—-毕业论文设计.doc" 描述了一种基于单片机的数字电压表的设计。该设计由A/D 转换模块，数据处理模块和显示模块三个主要模块组成。A/D 转换模块使用芯片ADC0808来完成，负责将模拟电压转换为数字量，并传送到数据处理模块。数据处理模块采用芯片AT89C51，负责对ADC0808传送来的数字量进行处理，并产生显示码送到显示模块进行显示，同时控制ADC0808芯片工作。该系统电路简单，成本低，且测量精度和可靠性较高。经过proteus软件仿真和调试，可以测量0-5V的1路模拟直流输入电压值，并通过一个四位一体的7段数码管显示出来。 关键词：数字电压表；A/D 转换；AT89C51；ADC0808；proteus。 Overall, the paper "Design of Digital Voltmeter Based on Single Chip Microcomputer-Graduation Thesis Design.doc" introduces a design of a digital voltmeter based on a single-chip microcomputer. The design consists of three main modules: A/D conversion module, data processing module, and display module. The A/D conversion module is mainly completed by the ADC0808 chip, which is responsible for converting the collected analog voltage into corresponding digital quantity and then transmitting it to the data processing module. The data processing module uses the AT89C51 chip, which is responsible for processing the digital quantity transmitted by the ADC0808 and generating the corresponding display code to the display module for display, and also controlling the operation of the ADC0808 chip. The circuit of the system is simple, with few components, low cost, and high measurement accuracy and reliability. After simulation and debugging with Proteus software, it can measure 0-5V of one-channel analog DC input voltage and display it through a four-digit integrated 7-segment digital tube. Keywords: digital voltmeter; A/D conversion; AT89C51; ADC0808; proteus.