成考院校在线答案
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">40、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机定时</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">/</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">计数器</span><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast">0</span><span style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">的中断服务子程序的第一条指令必须放在程序存储器的</span><u><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">地址单元。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:"Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei; mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">4、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机如果使用</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">6MHz</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">的晶振，则其机器周期为</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:"Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei; mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">13、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">堆栈是一个按后进先出规则存取数据的存储区，</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机的堆栈是</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family: "Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei;mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">20、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机的定时器</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">0</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">的运行控制位是</span><u><span lang="EN-US" style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">。</span><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">5、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">在汇编语言中，伪指令的真实含义是</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:"Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei; mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">22、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">MCS-51</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">系列单片机的存储器地址空间结构形式是</span><u><span lang="EN-US" style="font-size:12.0pt; mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线; mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:"Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei; mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">37、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机的堆栈是设置在</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">空间。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family: "Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei;mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">36、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">5</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">个中断源的中断请求标志位在中断请求被响应后，只有一个中断源的请求标志位不能被硬件清零，这个中断源是</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family: 宋体;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span><b><span style="mso-spacerun:yes"> </span></b><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt; mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family: "Times New Roman",serif;mso-fareast-font-family:Microsoft Yahei;mso-font-kerning:0pt"> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">11、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast">8051</span><span style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family: 宋体">单片机的波特率可变</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">10</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">位异步通信方式是指串行接口的</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span></span></u><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">。</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast"><span style="mso-spacerun:yes"> </span> <o:p></o:p></span></p>
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2022-09-12
[单选] <p class="MsoNormal" align="left" style="text-align:left">35、<span style="font-size: 12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:Calibri;mso-hansi-font-family: Calibri;mso-bidi-font-family:"Times New Roman"">下面是一段汇编语言源程序</span><span lang="EN-US" style="font-size:12.0pt;font-family:"Calibri",sans-serif; mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">,</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:"Times New Roman"">请指出程序运行后的结果是</span><span style="font-size:12.0pt;font-family:"Calibri",sans-serif;mso-fareast-font-family: 宋体;mso-bidi-font-family:"Times New Roman""> <u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u></span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-ascii-font-family:Calibri; mso-hansi-font-family:Calibri;mso-bidi-font-family:"Times New Roman"">。</span><span lang="EN-US" style="font-size:12.0pt;font-family:"Calibri",sans-serif; mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">ORG<span style="mso-tab-count:2"> </span>0000H <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">MOV<span style="mso-tab-count:2"> </span>DPTR,<span style="mso-tab-count: 1"> </span>#TAB <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">MOV<span style="mso-tab-count:2"> </span>A,<span style="mso-tab-count: 2"> </span>#03H <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">MOVC<span style="mso-tab-count:2"> </span>A,<span style="mso-tab-count:2"> </span>@A+DPTR <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">SJMP<span style="mso-tab-count:2"> </span>$ <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:21.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">TAB:<span style="mso-tab-count:1"> </span>DB<span style="mso-tab-count:1"> </span>00H,01H,04H,09H,16H,25H <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="margin-left:63.0pt;text-align:left; text-indent:21.0pt"><span lang="EN-US" style="font-size:12.0pt;font-family: "Calibri",sans-serif;mso-fareast-font-family:Microsoft Yahei;mso-bidi-font-family:"Times New Roman"">END <o:p></o:p></span></p>
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