论文部分内容阅读
“556”是运算与逻辑相结合的时基电路,内含2个独立“555”电路,原理框图见图1,逻辑表达式为:(?)式(1)在无复位信号时有效,当控制电压为高电
“556 ” is a combination of computing and logic time base circuit, contains two independent “555 ” circuit, the block diagram shown in Figure 1, the logical expression is: (? Effective when the control voltage is high