在DE2开发板上实现串口收发设计，系统时钟频率为50MHz,reset信号低电平有效，输入数据最高位为1时按位取反再输出-Achieve serial transceiver design DE2 board, the system clock frequency of 50MHz, reset active low signal, the input data is the most significant bit is 1. Bitwise re-export Google 翻译（企业版