成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal">3、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">已知中断类型码为</span><span lang="EN-US">18H</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，则中断服务程序入口地址存放在中断向量表的</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><u><span style="font-family: 宋体">③</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">25、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">可编程定时器</span><span lang="EN-US">/</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">计数器</span><span lang="EN-US">8253</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">能输出连续周期波形的工作方式是</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><u><span lang="EN-US" style="font-family:宋体"><span style="mso-spacerun:yes"> </span></span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">25、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">描述</span><span lang="EN-US">PCI</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">总线基本概念中正确的句子是</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">20、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">执行</span><span lang="EN-US"> IN<span style="mso-spacerun:yes"> </span>AL</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">，</span><span lang="EN-US">DX </span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">指令后，端口数据读入到</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><u><span lang="EN-US" style="font-family:宋体"><span style="mso-spacerun:yes"> </span></span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">寄存器。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">27、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">并行接口一般要对输出数据进行锁存，其原因是</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">28、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">与并行通信相比，串行通信适用于</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">情况</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">8、<span lang="EN-US">CPU</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">启动外设而不干预传送过程的传送方式是</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><u><span lang="EN-US" style="font-family:宋体"><span style="mso-spacerun:yes"> </span></span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">1、<span lang="EN-US">8254</span><span style="font-family:Microsoft Yahei; mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">的工作方式</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">产生连续的方波输出。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">24、<span lang="EN-US">INT n</span><span style="font-family: 宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">指令中断是</span> <u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><u><span lang="EN-US" style="font-family:宋体"><span style="mso-spacerun:yes"> </span></span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal">17、<span style="font-family:宋体">设串行异步通信时，每个字符的帧格式为<span lang="EN-US">10</span>位二进制数据，传送的波特率为<span lang="EN-US">1200</span>，则每秒钟传输的字符数为<u><span lang="EN-US"><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span><span style="mso-spacerun:yes"> </span></span></u></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">。</span></p>