扭环形移位计数器在彩灯控制电路中的应用

双向移位寄存器是一种中规模集成电路，可构成移位寄存器型计数器。文中介绍了双向移位寄存器的功能，以及由其构成的扭环形移位计数器的电路结构和输出状态，设计并论述了由扭环形移位计数器控制的单向增减和双向递增两种彩灯控制电路，说明对于较为简单的彩灯控制要求，可以实现结构简单、稳定可靠、经济适用的控制电路。

Application of twisted ring counter in lights control circuits

Bidirectional shift register is a kind of mediunvscale integrated circuits, it can be used to compose various counters conveniently. This paper introduces the basic functions of bidirectional shift register and circuit construction andiioutput states of twisted ring counter composited by bidirectional shift register; designs and discusses two kinds of lights circuits controlled by twisted ring counters; indicates that we can get simply-constructed, stable, credible and economical practical circuits, as long as the demands are relatively simple.