成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal">25、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman"">串行通信的通信方式为单双工方式和全双工方式。</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">24、<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"">求十进制数<span lang="EN-US">-102</span>的补码（以<span lang="EN-US">2</span>位<span lang="EN-US">16</span>进制数表示），该补码为<span lang="EN-US">9AH</span>。</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">14、<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"">A/D</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"">转换器的作用是将模拟量转换数字量；<span lang="EN-US">D/A</span>转换器的作用是将数字量转为模拟量。</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">23、<span lang="EN-US" style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">MCS-51</span><span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"">的串口是全双工的。</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">14、<span lang="EN-US" style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">MCS-51</span><span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"">的程序存储器只能用来存放程序。</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">40、<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―96</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"">单片机的最大寻址空间是</span></span><span style="mso-bookmark:_Hlk59749210"><span lang="PT-BR" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family: 黑体;mso-bidi-font-family:"Times New Roman";mso-ansi-language:PT-BR">1024K</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";mso-ansi-language: PT-BR">，</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"">该空间的地址范围为</span></span><span style="mso-bookmark:_Hlk59749210"><span lang="PT-BR" style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family: 黑体;mso-bidi-font-family:"Times New Roman";mso-ansi-language:PT-BR">0000H―1024H</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">9、<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">.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";color:black; mso-themecolor:text1">有一个全双工的同步串行口，有<span lang="EN-US">4</span>种工作方式</span></span><span style="mso-bookmark:_Hlk59749210"><span lang="EN-US" style="font-family:黑体; mso-bidi-font-family:"Times New Roman";color:black;mso-themecolor:text1"> <o:p></o:p></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">35、<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">定时器与计数器的工作原理均是对输入脉冲进行计数。</span><span lang="EN-US" style="font-family: 黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-themecolor:text1"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">33、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">中断服务程序的最后一条指令是<span lang="EN-US">RET</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 [判断] <p class="MsoNormal">38、<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"">单片机外部中断请求信号有电平方式和脉冲方式</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>