CPLD控制液晶显示实验研究

通过CPLD控制液晶显示，主要包括利用Protel设计系统电路、Visual C^＋＋编写控制液晶显示的界面、串口通信和利用VHDL语言编写控制液晶显示等．文章介绍了系统电路的设计过程，如何实现串口通信、单片机和CPLD之间的数据传输，介绍了液晶模块特点和CPLD实现液晶显示过程，最终实现用计算机通过串行口控制点阵式液晶显示器显示．

Experimental Research LCD Control CPLD

The purpose of this subject is to control the liquid crystal to show through CPLD,Mainly including utilize Protel to design the systematic circuit,Visual c ++ writes and controls interface,bunches of communication that the liquid crystal show,Utilize VHDL language to write and control the liquid crystal to show,This text has introduced the design process of the systematic circuit mainly,How to realize bunches of communication,Data transmission between one-chip computer and CPLD,Recommended the module characteristic and CPLD of liquid crystal to realize the liquid crystal shows the course finally,Realize finally that shows through the serial configuration liquid crystal display of control points with the computer.