LFSR(线性反馈移位寄存器）用于产生可重复的伪随机序列PRBS，该电路由n级触发器和一些异或门组成。在每个时钟周期内，新的输入值会被反馈到LFSR内部各个触发器的输入端，输人值中的一部分来源于LFSR的输出端，另一部分由LFSR各输出端进行异或运算得到。

Editors Note: This is the third and final portion of our introduction to Linear Feedback Shift Registers (LFSRs). These articles are abstracted from the book Bebop to the Boolean Boogie (An ...

The taps are identical for both XOR-based and XNOR-based LSFRs, although the resulting sequences are different. Multiple alternative tap combinations can also yield maximum-length LFSRs. For example, ...