homework 发表于 2020-11-5 10:13:05

武汉理工大20秋数字逻辑_作业二题目

数字逻辑_作业二
1.[判断题] 一个74LS00芯片可以构成一个或门。
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    A.正确
    B.错误
    答:——A——
2.[判断题] PROM与PLA的主要区别为PROM只能改写一次,而PROM可以改写多次。
    A.正确
    B.错误
    答:——B——
3.[判断题] 用基本门电路构成的逻辑电路就是组合逻辑电路。
    A.正确
    B.错误
    答:——B——
4.[单选题] 下列各函数等式中无冒险现象的函数式有______。
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="104" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055399.png"></span> <span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="130" height="25" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055425.png"></span> <span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    C.<p class="MsoNormal" style="layout-grid-mode:char;line-height:12.0000pt;" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="165" height="25" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055451.png"></span> <o:p></o:p></p>
    D.<p class="MsoNormal" style="layout-grid-mode:char;line-height:12.0000pt;" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="165" height="25" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055476.png"></span> <o:p></o:p></p>
    答:————
5.[单选题] N个触发器可以构成最大计数长度(进制数)为______的计数器。
    A.N
    B.2N
    C.N2
    D.2N
    答:————
6.[单选题] 下列触发器中,没有约束条件的是______。
    A.基本RS触发器
    B.边沿D触发器
    C.同步RS触发器
    D.主从RS触发器
    答:————
7.[单选题] 某4变量卡诺图中有9个“0”方格7个“1”方格,则相应的标准与或表达式中共有多少个与项______?
    A.9
    B.7
    C.16
    D.不能确定
    答:————
8.[单选题] 3变量逻辑函数有______个最小项。
    A.2
    B.4
    C.8
    D.16
    答:————
9.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">逻辑项</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103931.png"></span>的相邻项是______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="63" height="23" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103947.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    B.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103975.png"></span> <o:p></o:p></p>
    C.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104004.png"></span> <o:p></o:p></p>
    D.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104033.png"></span> <o:p></o:p></p>
    答:————
10.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">根据给定的真值表判断F表示的门电路为:______</span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;">。</span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal" align="center" style="text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="184" height="122" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj054901.png"></span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    A.与门
    B.或门
    C.与非门
    D.或非门
    答:————
11.[单选题] 在下列逻辑部件中,不属于组合逻辑部件的是______。
    A.译码器
    B.编码器
    C.全加器
    D.寄存器
    答:————
12.[单选题] 下列电路中,属于时序逻辑电路的是______。
    A.编码器
    B.半加器
    C.寄存器
    D.译码器
    答:————
13.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">根据等效关系的传递性,若有状态</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="24" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056978.png"></span>和<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057002.png"></span>等效,又有状态<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057032.png"></span>和<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057056.png"></span>等效,则状态<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="24" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057085.png"></span>和<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057109.png"></span>也等效。正确的写法是:______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="24" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057153.png"></span>,<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057177.png"></span>),(<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057203.png"></span>,<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057227.png"></span>)-<span style="font-family:Wingdings;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">à</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="50" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057254.png"></span>)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="50" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057281.png"></span>),(<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="54" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057307.png"></span>)-<span style="font-family:Wingdings;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">à</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="50" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057334.png"></span>)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="24" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057361.png"></span>,<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057385.png"></span>),(<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057411.png"></span>,<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057435.png"></span>)-<span style="font-family:Wingdings;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">à</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="24" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057462.png"></span>,<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057486.png"></span>)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="50" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057513.png"></span>),(<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="54" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057539.png"></span>)-<span style="font-family:Wingdings;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">à</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">(</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="54" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057566.png"></span>) <span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    答:————
14.[单选题] 已知F(A,B,C)=∑m(3,5,6,7),则F‘=______。
    A.∏M(0,1,2,4)
    B.∑m(0,1,3,4)
    C.∑m(0,1,2,5)
    D.∏M(0,1,2,6)
    答:————
15.[单选题] 下列触发器中______具有约束条件。
    A.RS触发器
    B.D触发器
    C.JK触发器
    D.T触发器
    答:————
16.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">下列电路中,实现逻辑功能</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="70" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026736.png"></span>的是______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="289" height="155" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026749.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="287" height="155" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026752.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="304" height="134" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026755.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="282" height="135" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026758.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    答:————
17.[单选题] 下列逻辑电路中,不属于组合逻辑的是______。    福师答案Q761296021更多答案请进 www.ap5u.com
    A.译码器
    B.编码器
    C.全加器
    D.寄存器
    答:————
18.[单选题] 构成时序逻辑电路的基本单元最______。
    A.编码器
    B.数据选择器
    C.数值比较器
    D.触发器
    答:————
19.[单选题] 在下图所示电路中,电路______的输出不为高电平。
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="100" height="45" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056501.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="123" height="45" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056504.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="112" height="48" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056507.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="124" height="59" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056510.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    答:————
20.[单选题] <p class="17"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">逻辑项</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="57" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013770.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">的相邻项是______。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="63" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013785.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="63" height="23" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013788.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="67" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013791.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="64" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013794.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    答:————
21.[单选题] 二进制小数-0.1001的补码表示为______。
    A.0.1010
    B.1.1001
    C.1.0110
    D.1.0111
    答:————
22.[单选题] 已知奇校验位P的值是1,下列的ASCII码哪个符合条件:______。
    A.P1010100
    B.P1000010
    C.P0100000
    D.P0110001
    答:————
23.[单选题] 下列触发器中______具有约束条件。
    A.RS触发器
    B.D触发器
    C.JK触发器
    D.T触发器
    答:————
24.[单选题] 二进制码1000的格雷码是______。
    A.1111
    B.1000
    C.1100
    D.1001
    答:————
25.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">n变量的逻辑函数,</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj051919.png"></span>为最小项,则有<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="52" height="60" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj051949.png"></span>=______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    A.0
    B.1
    C.m
    D.n
    答:————
26.[单选题] 数字系统中,采用______可以将减法运算转化为加法运算。
    A.原码
    B.补码
    C.Gray码
    D.反码
    答:————
27.[单选题] 3变量逻辑函数有______个最小项。
    A.2
    B.4
    C.8
    D.16
    答:————
28.[单选题]         要使与非门的输出为0,输入应满足______。
    A.        全为0
    B.        全为1
    C.        至少一个为1
    D.        至少一个为0
    答:————
29.[单选题] 二进制小数-0.0110的补码表示为______。
    A.0.1010
    B.1.1001
    C.1.0110
    D.1.1010
    答:————
30.[单选题] <p class="MsoNormal" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">描述逻辑电路的真值表见下表所示,则其逻辑表达式F=______。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p><p class="MsoNormal" align="center" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="594" height="142" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103354.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    A.<p class="16" style="text-indent:0.0000pt;mso-char-indent-count:0.0000;mso-pagination:widow-orphan;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="77" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103382.png"></span> <o:p></o:p></p>
    B.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="79" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103411.png"></span> <o:p></o:p></p>
    C.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="52" height="22" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103440.png"></span> <o:p></o:p></p>
    D.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="52" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103469.png"></span> <o:p></o:p></p>
    答:————
31.[单选题] 同步时序电路设计中,状态编码采用相邻编码法的目的是______。
    A.减少电路中的触发器
    B.提高电路速度
    C.提高电路可靠性
    D.减少电路中的逻辑门
    答:————
32.[单选题] 构成时序逻辑电路的基本单元最______。
    A.编码器
    B.数据选择器
    C.数值比较器
    D.触发器
    答:————
33.[单选题] 构成时序逻辑电路的基本单元最______。
    A.编码器
    B.数据选择器
    C.数值比较器
    D.触发器
    答:————
34.[单选题] 在情况______下,与非门的输出结果是逻辑0。
    A.输入全部为0
    B.输入至少有一个0
    C.输入仅有一个0
    D.输入全部为1
    答:————
35.[单选题] 下列逻辑功能器件中______是译码器。
    A.74LS00
    B.74LS48
    C.74LS138
    D.74LS151
    答:————
36.[单选题] 七位无符号二进制数能表示的最大十进制数为______。
    A.127
    B.128
    C.64
    D.255
    答:————
37.[单选题] 三种最基本的逻辑门属于简单门电路,它们是______。
    A.“与”门、“或”门、“与非”门
    B.“与”门、“或”门、“非”门
    C.“与”门、“或非”门、“与非”门
    D.“与”门、“异或”门、“非”门
    答:————
38.[单选题] 下列逻辑功能器件中______是译码器。
    A.74LS00
    B.74LS48
    C.74LS138
    D.74LS151
    答:————
39.[单选题] 构成时序逻辑电路的基本单元最______。
    A.编码器
    B.数据选择器
    C.数值比较器
    D.触发器
    答:————

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