Sample multiplexor 8 to 1

Verilog语言，可在QuartusII正确运行，实现远程控制系统，利用异步串行通信，PC发送数据FPGA接收，实现本地回环模式。-清华大学电子课程设计：Verilog language, you can QuartusII correctly, remote control systems, using asynchronous serial communication, PC to send data received FPGA to achieve the local loopback