实现矩阵的各种操作，加减乘，下载该类可放面以后的编程。-achieve the matrix operation, modified by downloading such caving face future programming.

51单片机EPROM操作，IIC总结，数码管显示，矩阵键盘输入-51 single-chip EPROM operation, IIC concluded, digital display, matrix keyboard

VHDL实现点阵的操作，通过利用字模软件来得到汉字的二进制码后放到程序当中，在显示的同时数码管会相应的显示汉字所对应的字符。-VHDL implementation of the lattice operations, through the use of matrix software comes to the character of the binary code into the program in display also digital tube will display Chin