一种实现CRC的工程算法，按比特实现法、块异或汇编实现法、查余式表实现法，并通过在zsp400的内核环境下运行和仿真这几种实现法，从而得出结论：查余式表实现法是一种较好的实现法。-CRC works to achieve an algorithm bit by the realization of law, or the compilation of different pieces of the realization of law, check-type table to achieve more than law, and through the core zsp400 operation and simulation environment to achieve these types of law, in order to come to the conclusion: Richard Yu-style table is to achieve the realization of a better method.