作业帮 发表于 2020-11-5 10:01:15

武汉理工大20秋数字逻辑(专科)-作业二

数字逻辑(专科)-作业二
1.[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。
网页下面的附件是答案,核对题目下载
    A.正确
    B.错误
    答:——B——
2.[判断题] 奇校验能查出奇数个错。
    A.正确
    B.错误
    答:——A——
3.[判断题] 若逻辑变量x和y满足xy=x+y,则x=y。( )
    A.正确
    B.错误
    答:——A——
4.[判断题] 一个74LS00芯片可以构成一个或门。
    A.正确
    B.错误
    答:————
5.[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:————
6.[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:————
7.[单选题] 一位8421BCD码计数器至少需要______个触发器。
    A.3
    B.4
    C.5
    D.10
    答:————
8.[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:————
9.[单选题] <p class="17"><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="17" align="center" style="text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="595" height="147" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013324.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="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="89" height="33" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013327.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="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="79" height="37" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013330.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="17"><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/szlj01.files/szlj013333.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="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="58" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013336.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    答:————
10.[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:————
11.[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:————
12.[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:————
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;">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/szlj02.files/szlj024289.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="67" height="28" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj024305.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="68" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj024308.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="75" height="35" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj024311.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="69" height="35" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj024314.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] 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:————
15.[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="590" height="138" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023817.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="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="85" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023820.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="89" height="33" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023823.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="53" height="28" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023826.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="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023829.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    答:————
16.[单选题] 已知F(A,B,C)=∑m(3,5,6,7),则F‘=______。    福师答案Q761296021更多答案请进 www.ap5u.com
    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:————
17.[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:————
18.[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:————
19.[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:————
20.[单选题] 已知F(A,B,C) = A + BC,则F的最小项之和的形式为______。
    A.Σm(3,4,5,6,7)
    B.<p class="MsoNormal" style="display:inline;"><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/szlj055986.png"></span>(0,1,2)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span></p>
    C.Σm(0,1,2)
    D.<p class="MsoNormal" style="margin-left:10.5000pt;text-indent:-10.5000pt;mso-char-indent-count:-1.0000;line-height:150%;" style="display:inline;"><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/szlj056029.png"></span>(3,4,5,6,7)<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] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">当图所示的虚线框内为______时,可以实现D触发器转换为T触发器。</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="text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="210" height="120" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj044402.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    A.异或门
    B.同或门
    C.或非门
    D.与非门
    答:————
22.[单选题] 下列逻辑电路中,不属于组合逻辑的是______。
    A.译码器
    B.编码器
    C.全加器
    D.寄存器
    答:————
23.[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:————
24.[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:————
25.[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:————
26.[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:————
27.[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:————
28.[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="584" height="139" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj033570.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="MsoNormal" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;" style="display:inline;"><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/szlj03.files/szlj033598.png"></span> <o:p></o:p></p>
    B.<p class="18" 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="79" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj033627.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/szlj03.files/szlj033656.png"></span> <o:p></o:p></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="52" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj033685.png"></span> <o:p></o:p></p>
    答:————
29.[单选题] 构造一个同步模18计数器,需要触发器数量为______。
    A.3
    B.4
    C.5
    D.6
    答:————
30.[单选题] 一个16位的二进制整数,用十进制数表示至少要______位。
    A.4
    B.6
    C.5
    D.7
    答:————
31.[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:————
32.[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;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="215" height="143" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043328.png"></span><span style="font-family:Microsoft Yahei;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:————
33.[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:————
34.[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:————
35.[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:————
36.[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:————
37.[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:————
38.[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;">在下图所示的三态门电路中,使能控制端 I</span><sub><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;vertical-align:sub;">A</span></sub><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">、I</span><sub><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;vertical-align:sub;">B</span></sub><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">______不能保证该电路正常工作。</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="235" height="168" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034750.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p>      </o:p></span></p>
    A.IA=0,IB=0
    B.IA=0,IB=1
    C.IA=1,IB=0
    D.IA=1,IB=1
    答:————
39.[单选题] 一位8421BCD码计数器至少需要______个触发器。
    A.3
    B.4
    C.5
    D.10
    答:————

无忧答案网答案资料下载,请参考帮助中心说明
页: [1]
查看完整版本: 武汉理工大20秋数字逻辑(专科)-作业二