这是简易的FSK信号调制，把文件放入matlab的文件库中，通过在matlab的命令窗口直接调用功能函数并运行，可以直接看到仿真结果。-This is a simple FSK signal modulation, the file into Matlab file library, call function directly in the Matlab command window and run the simulation results can be seen directly.

vhdl learning materials，-VHDL based on the digital clock has an alarm clock, stopwatch, clock, date, stopwatch functions can start, pause, cleared, the clock can be set-up times, you can set the date

基于维也纳的仿真平台，它分为各个模块，添加自己的参数就可以方便进行仿真-The simulation platform based on Vienna, it is divided into various modules, add your own parameters can be convenient for simulation