成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal">16、<span style="mso-bookmark:_Hlk59749210"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">定时和计数都是对脉冲进行计数，定时与计数的区别是<span class="GramE">定时是</span>对周期已知的脉冲计数；计数是对周期未知的脉冲计数。</span></span><span style="mso-bookmark:_Hlk59749210"><span lang="EN-US" style="font-family:黑体; mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">18、<span style="font-family:黑体">必须进行十进制调整的十进制运算只有加法和减法。<span lang="EN-US"><span style="mso-spacerun:yes"> </span> <o:p></o:p></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">24、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman"">当<span lang="EN-US">EA</span>脚接高电平时，对<span lang="EN-US">ROM</span>的读操作只访问片外程序存储器。 </span><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">29、<span style="mso-bookmark:_Hlk59749210"><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman";color:black;mso-themecolor:text1">ADDC<span style="mso-spacerun:yes"> </span>A</span></span><span style="mso-bookmark: _Hlk59749210"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-themecolor: text1">，<span lang="EN-US">R7<span style="mso-tab-count:1"> </span><span style="mso-tab-count:1"> </span></span>这条指令是否正确？</span></span><span style="mso-bookmark:_Hlk59749210"><span style="font-family:黑体;mso-bidi-font-family: "Times New Roman";color:black;mso-themecolor:text1"> <span lang="EN-US"> <o:p></o:p></span></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">28、<span style="mso-bookmark:_Hlk59749210"><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">MCS―51</span></span><span style="mso-bookmark:_Hlk59749210"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">单片机的<span lang="EN-US">P0―P4</span>口均是并行</span></span><span style="mso-bookmark:_Hlk59749210"><span lang="EN-US" style="font-family:黑体; mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:25%">12、<span lang="PT-BR" style="mso-bidi-font-size: 10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"; mso-ansi-language:PT-BR">ORG<span style="mso-spacerun:yes"> </span>2000H <o:p></o:p></span></p> <p class="MsoNormal" style="line-height:25%"><span lang="PT-BR" style="mso-bidi-font-size: 10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"; mso-ansi-language:PT-BR"><span style="mso-spacerun:yes"> </span>LACLL<span style="mso-spacerun:yes"> </span>3000H <o:p></o:p></span></p> <p class="MsoNormal" style="line-height:25%"><span lang="PT-BR" style="mso-bidi-font-size: 10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"; mso-ansi-language:PT-BR"><span style="mso-spacerun:yes"> </span>ORG<span style="mso-spacerun:yes"> </span>3000H <o:p></o:p></span></p> <p class="MsoNormal" style="line-height:25%"><span lang="PT-BR" style="mso-bidi-font-size: 10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"; mso-ansi-language:PT-BR"><span style="mso-spacerun:yes"> </span>RET <o:p></o:p></span></p> <p class="MsoNormal" style="line-height:25%"><span style="mso-bidi-font-size: 10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"">上边程序执行完</span><span lang="PT-BR" style="mso-bidi-font-size:10.5pt;line-height:25%;font-family:黑体; mso-bidi-font-family:"Times New Roman";mso-ansi-language:PT-BR">RET</span><span style="mso-bidi-font-size:10.5pt;line-height:25%;font-family:黑体;mso-bidi-font-family: "Times New Roman"">指令后</span><span style="mso-bidi-font-size:10.5pt; line-height:25%;font-family:黑体;mso-bidi-font-family:"Times New Roman"; mso-ansi-language:PT-BR">，<span lang="PT-BR">PC=</span>（ ）<span lang="PT-BR"> <o:p></o:p></span></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family: "Times New Roman""> <o:p> </o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">9、<span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"">8031</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">单片机的<span lang="EN-US">(<span style="mso-spacerun:yes"> </span>)</span>口的引脚，还具有外中断、串行通信等第二功能。</span><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">3、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">当外部中断请求的信号方式为脉冲方式时，要求中断请求信号的高电平状态和低电平状态都应至少维持<span lang="EN-US">(<span style="mso-spacerun:yes"> </span>)</span>。</span><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family: "Times New Roman""> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">11、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">下列指令中，不影响堆栈指针的指令是 <span lang="EN-US"><span style="mso-spacerun:yes"> </span>(<span style="mso-spacerun:yes"> </span>)</span>。<span lang="EN-US"> <o:p></o:p></span></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:黑体;mso-bidi-font-family:"Times New Roman""><span style="mso-spacerun:yes"> </span> <o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt;mso-bidi-font-size: 11.0pt;font-family:黑体;mso-bidi-font-family:"Times New Roman""><span style="mso-spacerun:yes"> </span></span><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family: "Times New Roman""> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">8、<span style="mso-bookmark:_Hlk60136201"><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">要想把数字送入<span lang="EN-US">DAC0832</span>的输入缓冲器，其控制信号应满足<span lang="EN-US">(<span style="mso-spacerun:yes"> </span>)</span>。</span></span><span style="mso-bookmark:_Hlk60136201"><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></span></p>