基于CPLD和单片机实现高精度数字万用表

Based on the CPLD and the Single Slice Computer to Realize High Accuracy Numeric Multimeter

介绍了基于EDA技术设计数字万用表。本系统以CPLD (ComplexProgrammableLogicDevice) 和AT89C51为核心, 在MAX+PLUSII10. 0环境下采用VHDL语言实现CPLD嵌入式子系统设计、在AT89C51平台上完成转换计算软件。该系统具有测量精度高、硬件简单、灵活性强、易于开发等特点。

How to design numeric multimeter was introduced.The core of the system is a CPLD and a AT89C51,the CPLD is realized with VHDL under the MAX+PLUS II100 environment,the conversion calculation software is completed on the terrace of AT89C51.The system has the characteristics that the measure accuracy is high,the hardware is simple,the stability is strong,and it is easy to develop.