环形移位计数器,国外称为“moebius counter”或称“Twisted tail ring counter”。常用作状态控制器。只要对触发器的每一个输入端进行控制,就可以控制每个状态的变化。它的另一个重要应用,是作为多相钟发生器。一般n个触发器可产生2n个钟相。在一定的频率下,可产生2n个不同相位的钟脉冲。 Ring-shaped shift counter, abroad called “moebius counter” or “Twisted tail ring counter”. Commonly used as a state controller. As long as each input to the trigger control, you can control each state changes. Another important application of it is as a multi-phase clock generator. Generally n flip-flops can generate 2n clock phases. In a certain frequency, can produce 2n different phase of the clock pulse.