首先介绍了防抖型矩阵式键盘的整体设计思路,然后采用模块化设计方法对各个电路用VHDL进行设计,最后进行顶层文件设计和仿真,并用PLD器件下载验证.整个电路具有故障率低、使用灵活、便于修改、在系统可编程性及可移植性强等优点.

-First introduced the anti-shake-type matrix keyboard' s overall design concept, and then use a modular design approach to the various circuits VHDL design, last, top-level document design and simulation, and verification using PLD device to download. The whole circuit has a failure rate is low, the use of flexible, easy to modify, in the system programmability and portability strong advantages.