用查表法计算 CRC 码的 CRC-CCITT 校验软件设计；通信传输方式通过共享文件实现；生成多项式为 CRC-CCITT，能在两台计算机上运行程序，一台产生 CRC 码，另一台校验。-CRC-CCITT check software is designed by using look-up table method communication transmission mode is realized by shared file generating polynomial is CRC