摘要
针对用“直接反馈法”不能实现移位寄存器型计数器的自启动，提出了一种简单、实用的措施，即在原电路的基础上仅对反馈逻辑关系作修改，使电路变成能自启动的移位寄存器型计数器。
おirect feedback method can′t be used to start a shift register counter by itself. The feedback logic relation of the circuit is thus modulated to make the counter selfstarting possible.
关键词
反馈逻辑
移位寄存器
计数器
有效循环
自启动
Feedback logic,Shift register,Counter,Effective circulation,Ineffective circulation,Self starting
