基于VHDL语言编写的，通过下载到FPGA板子上，连接到电脑屏幕实现的屏幕保护程序，屏保中实现了多种运动方式，已包含按键防抖动功能。-VHDL language, downloaded to the FPGA board connected to the computer screen to achieve the screen saver, screensaver to achieve a variety of sports, contains the button shake functio