《电子技术基础(1)(下)1346》19秋在线作业2

数（100 1011）2 相应的十进制数是( )。
A:35
B:59
C:75
D:87

与8进制数(47.3)8等值的数为（）。
A:<img class=”kfformula” src=”data:image/png;base64,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” data-latex=”{（100111.011）}_{2}”>
B:<img class=”kfformula” src=”data:image/png;base64,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” data-latex=”{（27.8）}_{16}”>
C:<img class=”kfformula” src=”data:image/png;base64,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” data-latex=”{（27.3）}_{16}”>
D:0001  0110

（16）10的8421BCD码为（）。
A:1 0000
B:1 1000
C:1 0110
D:0001 0110

与或表达式<img id=”ODesytgTEMP20191226025038469.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODesytgTEMP20191226025038469.png?Expires=1892703038&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=dYGEEeDD3QQAHJCMlZiWQsMwKsE%3D” />等于（）
A:<img id=”ODkpgktTEMP20191226025038651.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODkpgktTEMP20191226025038651.png?Expires=1892703038&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=PV7Fk4IgGS1E2WMUXPztN0sMwG0%3D” />
B:<img id=”ODxiqzmTEMP20191226025038897.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODxiqzmTEMP20191226025038897.png?Expires=1892703041&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=ZUi8MOIT78uMEyhfJOYbnxMeIWE%3D” />
C:A+B
D:<img id=”ODfkzukTEMP20191226025041983.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODfkzukTEMP20191226025041983.png?Expires=1892703042&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Esn2nvX%2B4HY3sFnWwfZkySnQkbY%3D” />

在逻辑代数中，若A+B=B+C，则（）。
A:不能确定
B:A≠C
C:A=C
D:B=0

<img id=”ODlpjqnTEMP20191226025042469.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODlpjqnTEMP20191226025042469.png?Expires=1892703042&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=/2kCYQJBc8fjg3Pr%2Bk3C7eY4xjw%3D” />的最小项为（）。
A:<img id=”ODnhsekTEMP20191226025042720.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODnhsekTEMP20191226025042720.png?Expires=1892703042&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=BkSXhXbyPD7LBGfywmT8nH5GM3Q%3D” />
B:<img id=”ODexkfoTEMP20191226025042897.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODexkfoTEMP20191226025042897.png?Expires=1892703043&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=tI5QS4xpbxK87TCqqIvOg5xqXYc%3D” />
C:<img id=”ODxrilgTEMP20191226025042969.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODxrilgTEMP20191226025042969.png?Expires=1892703043&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=alEUizM%2B1bapFNI9vGTH5ZkNNDo%3D” />
D:<img id=”ODwfrrgTEMP20191226025043124.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODwfrrgTEMP20191226025043124.png?Expires=1892703043&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=HyCkOwIH4DspYCv7A1CCe6keQKg%3D” />

函数<img id=”ODxqxlpTEMP20191226025043707.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODxqxlpTEMP20191226025043707.png?Expires=1892703043&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Lt5CifkpFCJsLHim1PMti9yg%2B7A%3D” />，下列正确的是（）。
A:<img id=”ODdijhyTEMP20191226025043811.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODdijhyTEMP20191226025043811.png?Expires=1892703044&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=SjVI6bt%2BkB1jEYj%2BygY%2BwiU75O8%3D” />
B:<img id=”ODzcgkwTEMP20191226025044063.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODzcgkwTEMP20191226025044063.png?Expires=1892703044&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=EqJ0Bqio//lhgwEzvAr6NdFTjw4%3D” />
C:<img id=”ODoisxgTEMP20191226025044126.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODoisxgTEMP20191226025044126.png?Expires=1892703044&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=qaCR5DPmAHVf9n8%2BxePX%2B89DP3k%3D” />互为对偶式
D:不确定

函数<img id=”ODssflkTEMP20191226025044641.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODssflkTEMP20191226025044641.png?Expires=1892703044&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=aX3nJ3wMGuWUdlYJQ191A32aUXo=”>的最简与或表达式为（）。
A:<img src=”http://file.open.com.cn/ueditorupload/image/2019/12/27/6371304076428400362128817.png” title=”2-8.png” alt=”2-8.png”>
B: <img id=”ODpibwcTEMP20191226025044986.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODpibwcTEMP20191226025044986.png?Expires=1892703045&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=KUHC5Gy6FwLH/0wPQAdO5o/1d1w%3D”>
C: <img id=”ODuiprsTEMP20191226025045228.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODuiprsTEMP20191226025045228.png?Expires=1892703045&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=8RG4OPT8oNVTlUfPmKpyF%2By8YKY%3D”>
D: <img id=”ODprlhsTEMP20191226025045412.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODprlhsTEMP20191226025045412.png?Expires=1892703045&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=CEPL8FhzMOgFCc2fjZ5sr6VqTew%3D”>

函数<img id=”ODvnnnjTEMP20191226025045850.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODvnnnjTEMP20191226025045850.png?Expires=1892703046&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=GKxWnGqXvZNzOVj2RVAPWsA2aKE%3D” />的标准与或表达式是（）。
A:F=∑m(1,3,4,7,12)
B:F=∑m(0,4,7,12)
C:F=∑m(0,4,7,5,6,8,9,10,12,13,14,15)
D:F=∑m(1,2,3,5,6,8,9,10,11,13,14,15)

已知函数<img id=”ODgvlgmTEMP20191226025046571.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODgvlgmTEMP20191226025046571.png?Expires=1892703046&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=9xLawErm%2BsW93IvPGZl1ga9xdJw%3D” />， <img id=”ODnrbnuTEMP20191226025046720.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODnrbnuTEMP20191226025046720.png?Expires=1892703046&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=NSWLVRJ82bvIQcrHNsCh8NZz%2Buk%3D” />，试问F1与F2的关系是（ ?）。
A:相等
B:反函数
C:对偶
D:不相关

在下图CMOS电路中实现<img id=”ODzhjveTEMP20191226025047642.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODzhjveTEMP20191226025047642.png?Expires=1892703047&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=ODMnmYD7dbLLMD8iQlPtyHRT7pA%3D” />电路为（）。
A:<img id=”ODhrgyjTEMP20191226025047799.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODhrgyjTEMP20191226025047799.png?Expires=1892703047&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=ddXLu73/8T2Vd6pMMBcSaiyUjH8%3D” />
B:<img id=”ODgnkdoTEMP20191226025048048.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODgnkdoTEMP20191226025048048.png?Expires=1892703048&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=jSuXERMRnAv7nPKocBCSwEoLloc%3D” />
C:<img id=”ODtpccjTEMP20191226025048125.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODtpccjTEMP20191226025048125.png?Expires=1892703048&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=B08ugvc4fzj4jWH5L/DK8MTeXF4%3D” /> 
D:<img id=”ODmpzgeTEMP20191226025048358.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODmpzgeTEMP20191226025048358.png?Expires=1892703048&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=JPcNjT2WfAQiDmTQRl6otKln%2Bzg%3D” />

以下电路中常用于总线应用的有（）。
A:OC门
B:TSL门
C:漏极开路门
D:CMOS与非门

下图所示电路中输入函数F的表达式为（）。 <img id=”ODqjhuyTEMP20191226025048765.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODqjhuyTEMP20191226025048765.png?Expires=1892703048&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=wAw82QvXzJ8y2NYo5Zdz%2BKqHM1Y%3D” />
A:<img id=”ODxdeweTEMP20191226025048934.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODxdeweTEMP20191226025048934.png?Expires=1892703049&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=%2BfE0F7LP16xz0zfgTBnrcOc44ug%3D” />
B:<img id=”ODzwsefTEMP20191226025049094.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODzwsefTEMP20191226025049094.png?Expires=1892703049&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=P4FgLrRFZonrYNnAYxHL78vkpM8%3D” />
C:<img id=”ODufeebTEMP20191226025049332.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODufeebTEMP20191226025049332.png?Expires=1892703049&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=/WGpSH/5pd8LcJ7sX%2Bh8lnpOhAw%3D” />
D:<img id=”ODiqdsmTEMP20191226025049485.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODiqdsmTEMP20191226025049485.png?Expires=1892703049&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=AQyQyKVKLsb/GR5hW%2B1WW7wYbqc%3D” />

若在编码器中有50个编码对象，则要求输出二进制代码为（）位。
A:5
B:6
C:10
D:50

8线—3线优先编码器的输入为I0—I7，当优先级别最高的I7有效时，其输出<img id=”ODkfnjcTEMP20191226025050085.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODkfnjcTEMP20191226025050085.png?Expires=1892703050&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=%2Bv6UYDavYgpLtpZFQdXvNaysznc%3D” />的值是（）。
A:111
B:010
C:000
D:101

用4选1数据选择器实现函数<img id=”ODipjziTEMP20191226025050519.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODipjziTEMP20191226025050519.png?Expires=1892703050&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=HdTy8UARd5Mpk1FbExGHlM5CxpE=”>，应使（）。
A:<img class=”kfformula” src=”data:image/png;base64,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” data-latex=”{D}_{0}={D}_{1}=0,{D}_{2}={D}_{3}=1″>
B:<img src=”http://file.open.com.cn/ueditorupload/image/2019/12/27/6371304179767877232252611.png” title=”2-16-B.png” alt=”2-16-B.png”>
C:<img src=”http://file.open.com.cn/ueditorupload/image/2019/12/27/6371304181290817985619461.png” title=”2-16-C.png” alt=”2-16-C.png”>
D:<img src=”http://file.open.com.cn/ueditorupload/image/2019/12/27/6371304183062610704360105.png” title=”2-16-D.png” alt=”2-16-D.png”>

用3线-8线译码器74LS138和辅助门电路实现逻辑函数<img id=”ODdgpymTEMP20191226025051228.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODdgpymTEMP20191226025051228.png?Expires=1892703051&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=u0xf/IXbE0SyWOPEH%2B0WHcTS6ik%3D” />，应（）。
A:用与非门，Y=<img id=”ODntlycTEMP20191226025051450.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODntlycTEMP20191226025051450.png?Expires=1892703051&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=77JXzW3jfOTXw9GMZ%2BRMLuUlCWk%3D” />
B:用与门，Y=<img id=”ODzzlrcTEMP20191226025051511.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODzzlrcTEMP20191226025051511.png?Expires=1892703051&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=M/pl3Bd7lxJr0PBcPVJRppFi5rQ%3D” />
C:用或门，Y=<img id=”ODblzxuTEMP20191226025051737.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODblzxuTEMP20191226025051737.png?Expires=1892703051&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=YV4gvWmr6U/t%2B5w9YD4UENRZJWw%3D” />
D:用或门，Y=<img id=”ODiinbgTEMP20191226025051922.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODiinbgTEMP20191226025051922.png?Expires=1892703052&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=kSS7Rl18uRAy78hz9lrjjeeWA3g%3D” />

用译码器74138和适当的逻辑门实现函数<img id=”ODfavsmTEMP20191226025052461.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODfavsmTEMP20191226025052461.png?Expires=1892703052&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=/jMetKlJlRhnBiBFZgTK2n/0uJs%3D” />，正确的连线电路为（）。
A:<img id=”ODqsobbTEMP20191226025052701.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODqsobbTEMP20191226025052701.png?Expires=1892703052&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=PIdNkWSSMugsA8azRd6jsbfl9%2B0%3D” />
B:<img id=”ODdjehlTEMP20191226025052776.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODdjehlTEMP20191226025052776.png?Expires=1892703052&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=SqH770OGjxsNfHD5vhs/isPcMkE%3D” />
C:<img id=”ODrpfigTEMP20191226025053074.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODrpfigTEMP20191226025053074.png?Expires=1892703053&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=GhirS/xBqk81VbWYv44KvajqhnI%3D” />
D:<img id=”ODwccmkTEMP20191226025053235.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODwccmkTEMP20191226025053235.png?Expires=1892703053&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=3h3g155yFlsRaZKTXVMOojCyuYA%3D” />

应用74151实现如下的逻辑功能：Y=（A⊙B）⊙C，正确的连线电路为（ <img id=”ODcnduxTEMP20191226025053835.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODcnduxTEMP20191226025053835.png?Expires=1892703054&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=6fx7nud/GEcH5Ys3VbfjzVoPKa0%3D” />）
A:<img id=”ODvdpweTEMP20191226025054009.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODvdpweTEMP20191226025054009.png?Expires=1892703054&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=qAibPkvYejrb3RUASjSGyguJHvA%3D” />
B:<img id=”ODmaygaTEMP20191226025054263.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODmaygaTEMP20191226025054263.png?Expires=1892703054&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=XcNQzhy1zyuYggvHygyuYbV4l6I%3D” />
C:<img id=”ODaelnuTEMP20191226025054425.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODaelnuTEMP20191226025054425.png?Expires=1892703054&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=MUER2Y3n2OxenD/qexv7R707NFA%3D” />
D:<img id=”ODxdnuvTEMP20191226025054537.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODxdnuvTEMP20191226025054537.png?Expires=1892703054&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=m/FIS%2B89oXsYg0DoG04K8BWwvaQ%3D” />

集成4位二进制数据比较器为最低位芯片时，级联输入端（扩展端）的接法正确的是（）。
A:(a>b)=0, (a=b)=0, (a<b)=0
B:(a>b)=1, (a=b)=0, (a<b)=0
C:(a>b)=0, (a=b)=1, (a<b)=0
D:(a>b)=?, (a=b)=?, (a<b)=?

对于J-K触发器，当输入J=K=1时在时钟脉冲作用下其逻辑功能（）。
A:<img id=”ODhrkrsTEMP20191226025055275.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODhrkrsTEMP20191226025055275.png?Expires=1892703055&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=mcOQUpM99Rww3j%2BAWaj7htYyrm4%3D” />
B:置0
C:置1
D:<img id=”ODepsynTEMP20191226025055432.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODepsynTEMP20191226025055432.png?Expires=1892703055&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=LE3IdtGPku%2BgmOUXZplkjHLwrag%3D” />

某同步时序逻辑电路的状态转换图如所示，该时序逻辑电路是（）。 <img id=”ODdnrruTEMP20191226025055920.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODdnrruTEMP20191226025055920.png?Expires=1892703055&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=74Cmqj1SdgK8KnwU9oKfB/0u0DI%3D” />
A:同步四进制计数器
B:同步六进制计数器
C:同步八进制计数器
D:同步五进制计数器

对于T触发器，若初态<img id=”ODwtmvpTEMP20191226025056009.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODwtmvpTEMP20191226025056009.png?Expires=1892703056&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=9ft0V5VO6bLC5ff3nkUuAsyGmyo%3D” />，欲使次态<img id=”ODyoyzhTEMP20191226025056177.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODyoyzhTEMP20191226025056177.png?Expires=1892703056&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=klyXYGLJQ4l8ck9fmTo3ekAwq/Y%3D” />，应使输入T（）。
A:0
B:1
C:<img id=”ODoqajdTEMP20191226025056326.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODoqajdTEMP20191226025056326.png?Expires=1892703056&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=A7JTJyp5dCv29YBIY5uwXee%2BWMA%3D” />
D:<img id=”ODjzqckTEMP20191226025056477.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODjzqckTEMP20191226025056477.png?Expires=1892703056&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=0XEo81f1//NugR4e0gQi1vtHbOA%3D” />

下列逻辑电路中为时序逻辑电路的是（）。
A:变量译码器
B:加法器
C:数码寄存器
D:数据选择器

电路如下图所示，当<img id=”ODrkuyiTEMP20191226025057470.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODrkuyiTEMP20191226025057470.png?Expires=1892703057&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=Qza155U3Re6XBjx5z5oQE/NjBqY%3D” />时，下一个脉冲沿到达后其<img id=”ODpiybfTEMP20191226025057702.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODpiybfTEMP20191226025057702.png?Expires=1892703057&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=TXKBS9bMSY9jcLwfNGTQ9Pzlv1g%3D” />的状态为（）。 <img id=”ODebclyTEMP20191226025057771.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODebclyTEMP20191226025057771.png?Expires=1892703057&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=OoDttM8o3rbgsHY5T6Wx0uMwyXk%3D” />
A:011
B:101
C:110
D:000 <img id=”ODicecsTEMP20191226025057940.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODicecsTEMP20191226025057940.png?Expires=1892703058&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=MJvCWZWJpmBz2CugYWnTrBHZmks%3D” />

电路如下图所示，则该电路实现（）进制计数器。 <img id=”ODopcapTEMP20191226025059355.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODopcapTEMP20191226025059355.png?Expires=1892703059&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=andWTIgF/y52MiwCxrm9YiUWtPs%3D” />
A:9
B:10
C:11
D:12

一个容量为1K×8的存储器有（）个存储单元。
A:8192
B:16K
C:8000
D:8

石英晶体多谐振荡器的突出优点是（）。
A:速度高
B:振荡频率稳定
C:电路简单
D:输出波形边沿陡峭

用555定时器构成单稳态触发器，其输出脉宽为（）。
A:0.7RC
B:1.1RC
C:1.4RC
D:1.8RC

一个无符号8位数字量输入的DAC，其分辨率为（）位。
A:1
B:3
C:4
D:8

八进制数（17）8比十进制数（17）10小。
A:对
B:错

若两个函数具有不同的逻辑函数式，则两个逻辑函数必然不相等。
A:对
B:错

二进制并行加法器中，采用并行进位的目的是简化电路结构。
A:对
B:错

逻辑函数<img id=”ODhqsqrTEMP20191226025100240.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODhqsqrTEMP20191226025100240.png?Expires=1892703060&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=E/kUCIdG%2B5I8ee1UG40Ibm75x7g%3D” />的与或表达式是Y=(A+B)(C+D)。
A:对
B:错

多个三态门的输出接端接在同一总线上，当其中一个三态门传送信号时，其它三态门均处于高阻态。
A:对
B:错

JK触发器只要J，K端同时为1，则一定引起状态翻转。
A:对
B:错

单稳态触发器的暂稳态时间与输入触发脉冲宽度成正比。
A:对
B:错

T触发器的特性方程为<img id=”ODyqyjzTEMP20191226025100560.png” src=”http://oescdn.open.com.cn/zyglpt/OD/TEMP/2019/1226/ODyqyjzTEMP20191226025100560.png?Expires=1892703060&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=hx1XDLLl95v2NuKP2uUxcmkmX2Q%3D” />。
A:对
B:错

两个状态等价的条件是在相同的输入条件下具有相同的输出和相同的次态。
A:对
B:错

带使能端的译码器可作数据分配器使用。
A:对
B:错

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