用FPGA设计和制作键盘扫描

Design and Make Keyboard Scanning with FPGA

介绍一种基于FPGA的键盘扫描读取八位七段LED的设计方法。文章用VHDL语言和图形设计综合方法实现了键盘扫描读取八位七段LED,简单易懂。从而摆脱了在顶层设计中大量信号的定义,端口影射,元件的调用,使得设计简单明了。

A way of reading eight-bit-and-seven-segment LED by keybord scanning based on FPGA is introduced in this paper. This article contains an application and elements mapping way. The way is simple and understandable. Thus, it needn＇t define a lot of signal, map ports and transfer component. The design way tend to be simple.