上面的讨论可通过硬件或软件实现。硬件实现需要建立-个多段的基于生成多项式的移位寄存器。循环冗余校验寄存器为了生成CRC,信息数据位被送进移位寄存器,一次–位。寄存器包含-一个预设值。当每个数据位都已经移进移位寄存器时
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