东大20秋学期《数字电子技术基础Ⅰ》在线平时作业3百分-东北大学-无忧答案网

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东大20秋学期《数字电子技术基础Ⅰ》在线平时作业3百分

20秋学期《数字电子技术基础Ⅰ》在线平时作业3
1.[单选题] 八输入端的编码器按二进制编码时，输出端的个数是（）。
无忧答案网，附件是答案，核对题目下载
A.2个
B.3个
C.4个
D.8个
答:——B——
2.[单选题] 在二进制译码器中，若输入有4位代码，则输出有______个信号。
A.2
B.4
C.8
D.16
答:——D——
3.[单选题] 欲使JK触发器按Qn+1=1工作，可使JK触发器的输入端不正确的是( )
A.J=K=1
B.J=1，K=0
C.<div><img height="27" width="78" alt="" src="http://file.open.com.cn/ItemDB/98839/3d6fff4e-d6b1-408e-a20a-cbba29dc2afa/20119242096331.jpg" /></div>
D.<div><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman','serif'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"> <img height="29" width="51" alt="" src="http://file.open.com.cn/ItemDB/98839/3d6fff4e-d6b1-408e-a20a-cbba29dc2afa/201192420935316.jpg" />K=0</div>
答:——A——
4.[单选题] <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">如图所示电路，开关<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">A<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">、<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">B<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">断开为<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">1<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">，接通为<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">0<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">，灯<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">F<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">亮为<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">1<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">，灭为<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">0<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">，则灯<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">F<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">与开关<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">A<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">、<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">B<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'">的逻辑关系为<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">(）<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><img height="122" width="196" alt="" src="http://file.open.com.cn/ItemDB/98839/c719d928-feb8-4fce-a4a3-2e77dc2681e1/2011923115435467.jpg" />
A.F=AB
B.<img height="28" width="61" alt="" src="http://file.open.com.cn/ItemDB/98839/c719d928-feb8-4fce-a4a3-2e77dc2681e1/201192311541345.jpg" />
C.F=A+B
D.<img height="28" width="77" alt="" src="http://file.open.com.cn/ItemDB/98839/c719d928-feb8-4fce-a4a3-2e77dc2681e1/201192311552294.jpg" />
答:————
5.[单选题] 将一个时间上连续变化的模拟量转换为时间上离散的模拟量的过程为（）
A.采样
B.量化
C.保持
D.编码
答:————
6.[单选题] 以下四种转换器，（）是A/D转换器且转换速度最高。
A..并联比较型
B.逐次逼近型
C.双积分型
D.施密特触发器
答:————
7.[单选题] 对于T触发器，若原态 Qn=0，欲使新态Qn+1=1 ，应使输入T= ( )。
A.1或/Q
B.1
C.Q
D.以上都不对
答:————
8.[单选题] 存储8位二进制信息要( )个触发器。
A.2
B.3
C.4
D.8
答:————
9.[单选题] 如下CMOS电路能正常工作的电路是()
A.<img height="68" width="99" alt="" src="http://file.open.com.cn/ItemDB/98839/4536f810-c62f-4d89-b1bf-23bfd3103e01/2011923134142142.jpg" />
B.<img height="90" width="87" alt="" src="http://file.open.com.cn/ItemDB/98839/4536f810-c62f-4d89-b1bf-23bfd3103e01/2011923134121516.jpg" />
C.<img height="109" width="85" alt="" src="http://file.open.com.cn/ItemDB/98839/4536f810-c62f-4d89-b1bf-23bfd3103e01/2011923134025874.jpg" />
D.<img height="105" width="84" alt="" src="http://file.open.com.cn/ItemDB/98839/4536f810-c62f-4d89-b1bf-23bfd3103e01/201192313410875.jpg" />
答:————
10.[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:————
11.[单选题] <v:shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id="_x0000_s1026" style="MARGIN-TOP: 23.4pt; Z-INDEX: -1; LEFT: 0px; MARGIN-LEFT: 279pt; WIDTH: 155.15pt; POSITION: absolute; HEIGHT: 93.6pt; TEXT-ALIGN: left" wrapcoords="-119 0 -119 21438 21600 21438 21600 0 -119 0" type="#_x0000_t75"><v:imagedata o:title="" src="file:///C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\msohtmlclip1\01\clip_image001.png"></v:imagedata><w:wrap type="tight"></w:wrap></v:shape>如图所示电路，开关A、B断开为0，接通为1，灯F亮为1，灭为0，灯F与开关A、B的逻辑关系为（）<img height="117" width="228" alt="" src="http://file.open.com.cn/ItemDB/98839/9cf61851-ca47-47e5-89a0-119d255250e4/201192312028369.jpg" /><o:p></o:p>
A.F=AB
B.<img height="28" width="61" alt="" src="http://file.open.com.cn/ItemDB/98839/9cf61851-ca47-47e5-89a0-119d255250e4/2011923115858616.jpg" />
C.F=A+B
D.<img height="28" width="77" alt="" src="http://file.open.com.cn/ItemDB/98839/9cf61851-ca47-47e5-89a0-119d255250e4/2011923115710363.jpg" />
答:————
12.[单选题] 为产生一个定时脉冲，应采用（）
A.单稳态触发器
B.施密特触发器
C.多些振荡器
D.双稳态触发器
答:————
13.[单选题] <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">图示半导体三极管的工作状态是<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">()<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Times New Roman","serif"; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><div><img height="163" width="106" alt="" src="http://file.open.com.cn/ItemDB/98839/03c8e11e-e023-4ada-990c-d1b181bd924b/2011924194436959.jpg" /></div>
A.截止
B.饱和
C.放大
D.无法计算
答:————
14.[单选题] 一只四输入端与非门，使其输出为0的输入变量取值组合有（）种。东师答案q16478616401 或请进 ap5u.com
A.15
B.8
C.7
D.1
答:————
15.[单选题] 以下TTL参数数值大小表示正确的是( )
A.UIHmin≥Uth≥UILmax
B.UIHmin≤Uth≤UILmax
C.UIHmin≤Uth≤UILmax
D.UIHmin≤UILmax≤Uth
答:————
16.[单选题] 半导体E2PROM，写入的内容，可以通过_____擦除。（）
A.紫外线照射
B.电信号
C.口令
D.DOS命令
答:————
17.[单选题] 描述触发器的逻辑功能的方法是( )。
A.状态转换真值表
B.特性方程
C.状态转换图
D.以上全是
答:————
18.[单选题] 函数F =AB +BC，使F=1 的输入ABC组合为（）。
A.ABC = 000
B.ABC = 010
C.ABC = 101
D.ABC = 110
答:————
19.[单选题] 当TTL与非门的输入端悬空时相当于输入为()
A.逻辑0
B.逻辑1
C.不确定
D.0.5v
答:————
20.[单选题] EPROM是指（）
A.随机读写存储器
B.只读存储器
C.可编程的只读存储器
D.可擦可编程的只读存储器
答:————
21.[判断题] 同步时序电路由组合电路和存储器两部分组成
A.错误
B.正确
答:————
22.[判断题] A/D转换过程中，必然会出现量化误差。
A.错误
B.正确
答:————
23.[判断题] A/D转换过程中，必然会出现量化误差。
A.错误
B.正确
答:————
24.[判断题] D/A转换器的最大输出电压的绝对值可达到基准电压VREF。
A.错误
B.正确
答:————
25.[判断题] 同步触发器存在空翻现象，而边沿触发器和主从触发器克服了空翻
A.错误
B.正确
答:————

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东大20秋学期《数字电子技术基础Ⅰ》在线平时作业3百分