2019春高中物理第2章恒定电流11简单的逻辑电路课堂达标新人教版选修3_1.doc

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1、1第二章 11 简单的逻辑电路1(2016湖南长沙高二校级期末)逻辑电路的信号有两种状态:一是高电位状态,用“1”表示;二是低电位状态,用“0”表示。关于这里的“1”和“0” ,下列说法中正确的是( D )A “1”表示电压为 1V, “0”表示电压为 0VB “1”表示电压为大于或等于 1V, “0”表示电压一定为 0VC “1”和“0”是逻辑关系的两种可能的取值,不表示具体的数字D “1”表示该点与电源正极相连, “0”表示该点与电源负极相连解析:“1”表示该点与电源正极相连, “0”表示该点与电源负极相连。2(2016兰州铁一中高二检测)如图所示,由基本门电路组成的四个电路,其中能使小灯

2、泡发光的是( D )解析:要使小灯泡发光,就得使它两端的电压为高电压。A 图为“非”门, “1”经它输出 0;B 图是“与”门, “1”与“0”经它输出“0” ;C 图为“或”门, “0”与“0”经它输出“0” ;D 图中, “1”与“0”经它输出“1” ,小灯泡两端得到高电压,小灯泡发光,D正确。3(2016上海市浦东新区高二上学期期末)如图所示为门电路的输入端 A、 B 的输入波形图,请画出该门电路的输出端 Z 的输出信号的波形图。答案:见解析图解析:首先知道所接门电路为“与”门,当两个输入端都为高电势时,输出才为高电势,其真值表为:0,0,0;0,1,0;1,0,0;1,1,1。故其输出信号的波形图为:2

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