在Spartan-3E FPGA开发板上做的一个小项目--带语音功能的计算器，并且通过VGA接口在显示器上显示图形界面。涉及到ps2键盘模块，VGA显示模块，picoblaze汇编，串口收发模块。-In the Spartan-3E FPGA development board to do a small project- a calculator with voice capabilities, and VGA interface, through the graphical interfac