一个不错的CRC校验码！可以计算16位CRC校验码！-A good CRC Check! Can calculate the 16-bit CRC checksum code!

CRC16校验，把第一个8位二进制数据（既通讯信息帧的第一个字节）与16位的CRC寄存器的低8位相异或，把结果放于CRC寄存器-CRC16 checksum, the first byte of the first 8-bit binary data (both communications and information frames) with the 16-bit CRC register low eight different or put the result in the CRC r