用VHDL在quartus2下实现的计算器。输入为4*4矩阵键盘，输出为共用数据线的数码管。可以实现简单数学运算、逻辑运算、进制转换、连续运算等功能。-Using VHDL in quartus2 achieve calculator. Input 4* 4 matrix keyboard, the output data lines for sharing of digital control. Can achieve a simple mathematical operations, log

在Verilog环境下实现简单的数学逻辑运算从而更好的了解 VHDL的编程风格-arithmetic

通过选通可以分别实现四个5位数据的简单逻辑运算和数学运算-Gating can be achieved through four five data were simple logic operations and math

五级流水线的CPU的工程文件，在vivado上用verilog语言实现，包括串口，可进行简单的数学加法运算。(Five-stage pipeline CPU project files, including the serial port. vivado Verilog language. This CPU can do simple mathematical addition.)