基于FPGA和VHDL的LED点阵汉字滚动显示设计

Design of Chinese characters scrolling display on LED dot matrix based on FPGA and VHDL

主要研究基于FPGA和VHDL的LED点阵汉字滚动显示。首先描述了基于现场可编程门阵列(FPGA)的硬件电路,以及点阵显示汉字的原理;然后研究了在单个8×8 LED发光二极管点阵上滚动显示多汉字的原理;最后给出了描述其功能的VHDL语言程序设计方法。通过编程、调试、仿真、下载正确地实现了汉字滚动显示扫描结果,其硬件系统的实验验证也获得了与软件模拟仿真结论相吻合的结果。

The design of this subject mainly researches Chinese characters scrolling display on LED dot matrix screen based on FPGA and VHDL.This article firstly describes the hardware circuit based on logic cell array,as well as the principle of Chinese characters display on LED dot matrix.Then it also describes that multi-Chinese characters scroll in a single 8× 8 LED dot matrix.Finally,the article gives the method of VHDL design which describes the function. This design realizes the results of Chinese characters scrolling and scanning correctly by programming, debugging, simulation and download. Also the experimental verification of hardware systems has received the conclusions in accordance with the results of software simulation.