成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal">31、<span style="font-family:黑体;mso-bidi-font-family:"Times New Roman"; color:black;mso-themecolor:text1">由于<span lang="EN-US">MCS-51</span>的串行口的数据发送和接收缓冲器都是<span lang="EN-US">SBUF</span>，所以其串行口不能同时发送和接收数据，即不是全双工的串行口。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">21、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman"">我们所说的计算机实质上是计算机的硬件系统和软件系统的总称。</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="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;mso-bidi-font-weight:bold">单片机是面向数据处理的。</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 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"">DPTR</span><span style="font-size:12.0pt;mso-bidi-font-size:11.0pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">是由<span lang="EN-US">DPH</span>和<span lang="EN-US">DPL</span>两个<span lang="EN-US">8</span>位特殊寄存器组成的</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">36、<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">RS232C</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">是串行通信总线标准。</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 [单选] <p class="MsoNormal">20、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">堆栈指针<span lang="EN-US">SP</span>是一个（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）位寄存器</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 [单选] <p class="MsoNormal">27、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">计算机能直接识别的语言为（<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">23、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">当需要从<span lang="EN-US">MCS-51</span>单片机程序存储器取数据时，采用的指令为（<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">4、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">下列哪条指令是正确的（<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">8、<span style="font-size:12.0pt;mso-bidi-font-size:11.0pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">定时器<span lang="EN-US">T0</span>的溢出标志<span lang="EN-US">TF0</span>，在<span lang="EN-US">CPU</span>响应中断后（ <span style="mso-spacerun:yes"> </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></span><span lang="EN-US" style="font-family:黑体;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></p>