成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:150%">15、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; 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;line-height:150%; mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">单片机的并行</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 150%;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">I/O</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">接口</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">P3</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">有第二功能，其中</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 150%;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast">P3.7</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">的第二功能是</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 150%;font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast"> <!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <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:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path> <o:lock v:ext="edit" aspectratio="t"></o:lock> </v:shapetype><v:shape id="对象_x0020_1" o:spid="_x0000_i1025" type="#_x0000_t75" style='width:21pt;height:15.6pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page' o:ole=""> <v:imagedata src="DPJYLJYYDX.files/image001.wmz" o:title=""></v:imagedata> </v:shape><![endif]--> <!--[if !vml]--><img width="28" height="21" v:shapes="对象_x0020_1" src="http://wljy.whut.edu.cn:80/uploadfiles/word/DPJYLJYYDX.files/image002.png"> <!--[endif]--> <!--[if gte mso 9]><xml _tmplitem="2" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="对象_x0020_1" DrawAspect="Content" ObjectID="_1633346281"> <o:WordFieldCodes>\* MERGEFORMAT</o:WordFieldCodes> </o:OLEObject> </xml><![endif]-->,</span><span style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;line-height:150%;mso-ascii-font-family:Microsoft Yahei;mso-hansi-font-family:宋体">其作用是</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 150%;font-family:Microsoft Yahei;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;line-height:150%;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">的读选通信号输出。</span><span lang="EN-US" style="font-size: 12.0pt;mso-bidi-font-size:11.0pt;line-height:150%;font-family:Microsoft Yahei;mso-fareast-font-family: 等线;mso-fareast-theme-font:minor-fareast;mso-hansi-font-family:等线;mso-hansi-theme-font: minor-latin"> <o:p></o:p></span></p>
- 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">单片机的串行接口是一种</span><span 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"> <u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></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">传送的异步通信接口。</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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">8、<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">单片机有</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">可编程定时</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="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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">1、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">如果要允许</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">中断，则需要设置中断控制寄存器的值为</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><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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">7、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">程序计数器</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">PC</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">是一个自动加</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">1</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</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">16</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">位寄存器，它的作用是</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="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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">35、<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</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">单片机的指令系统中，变址寻址方式可以访问的存储器是</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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">17、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">当使用</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">12MHz</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">石英晶体振动器时，</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">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">单片机串行接口在工作方式</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">时，波特率是</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>
- 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">单片机的定时</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">计数器设置为</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><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">时是</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">13</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">位定时计数器。</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"><span style="mso-spacerun:yes"> </span></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>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">2、<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">单片机有</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">4</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</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">位并行</span><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">I/O</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">接口。</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>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:150%">29、<span style="font-size:12.0pt; mso-bidi-font-size:11.0pt;line-height:150%;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">在循环结构程序的设计中，其循环体的汇编语言程序段必须要包含</span><u><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height: 150%;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;line-height:150%;mso-ascii-font-family:Microsoft Yahei; mso-hansi-font-family:宋体">，以实现循环体程序在重复执行过程中的数据更新。</span><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;line-height:150%; font-family:Microsoft Yahei;mso-fareast-font-family:等线;mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:等线;mso-hansi-theme-font:minor-latin"> <o:p></o:p></span></p>