用c语言实现crc算法，采用ccitt标准多项式，查找表方法实现，低位先处理，接收校验成功标志为f0b8.-Checksum crc algorithm to achieve the standard which use ccitt polynomial, using look-up table method to achieve, low bit to deal with first, mark of success receiving check is f0b8.

CRC采用比特型算法，生成多项式为CCITT 0x1021，无需查表，节省内存空间。-CRC-bit-based algorithm used to generate a polynomial for the CCITT 0x1021, no look-up table to save memory space.

用c语言实现crc算法，采用ccitt标准多项式，查找表方法实现，高位先处理，接收校验成功标志为1d0f.-Checksum crc algorithm to achieve the standard which use ccitt polynomial, using look-up table method to achieve, high bit to deal with first, mark of success receiving check is 1d0f.