基于MICROBLAZE的数码管扫描IP核，在EXCD开发板上调试通过，可移植至其他开发板-An IP core based on microblaze,it is used for leds scanning

VGA在800*600分辨率屏上显示竖型彩条10份，扫描时钟是通过例化IP核PLL_CLK进行分频得到40MHz-VGA color display type vertical strip 10 parts, scan clock by instantiating the IP core PLL_CLK performed on 800* 600 resolution screen frequency to be 40MHz