说明：  此软件是CRC的软件实现方法，包括了CRC8，CRC16，CRC32的全部算法，每一种算法又分速度优先与资源优先型以及适中型三种算法。全部通过调试验证，与硬件无关，可移植于任何MCU
(This software is the software realization of CRC, including the CRC8, CRC16, CRC32 all the algorithms, each algorithm was divided into the speed of priorities and resources, as well as priority-based algorithm for moderate-type three. All through the debug validation, and hardware-independent, can be transplanted to any MCU)