数字电路实验教学平台的设计与实现

Design and Implementation of Digital Circuit Experiment Teaching Platform

现阶段开展数字电路实验教学的方法是基于面包板的电路搭建及复杂可编程逻辑器件上的功能来实现的,教学内容较为基础且多为验证性实验,缺少综合性、设计性实验。基于此,文章设计了一款数字电路实验新平台,将CPLD部分的实验改为用逻辑功能更强大的现场可编程逻辑门阵列实现。该实验平台在搭建电路的同时能够使用FPGA进行编程,免去了面包板与FPGA之间的切换,并在原有实验的基础上增加了数模转换、模数转换程控放大器的实验等综合性实验。FPGA部分预留了接口,能够让学生完成更多的设计性实验,丰富了实验内容,同时体现了平台的灵活性。

At this stage,the method of digital circuit experiment teaching is based on the circuit construction of bread board and the function realization on complex programmable logic devices.The teaching content is more basic and mostly confirmatory experiments,lacking comprehensive and design experiments.Based on this,a new platform for digital circuit experiment is designed,which changes the experiment of CPLD to be realized by field programmable logic gate array with more powerful logic function.The experimental platform can be programmed with FPGA while building the circuit,which eliminates the switching between bread board and FPGA,and adds comprehensive experiments such as digital to analog conversion and analog-to-digital to programmable amplifier on the basis of the original experiment.The interface is reserved in the FPGA part,which can enable students to complete more design experiments,enrich the experimental content,and reflect the flexibility of the platform.