基于quartus ii 9.0的99乘法器，用rom表做成的乘法器可以计算9*9的乘法，并在数码管上显示，使用时请按照自己的芯片和引脚设置。-Quartus ii 9.0 based on 99 multiplier, made by rom multiplier table can calculate the multiplication 9* 9, and in the digital control display, according to their own use when the