成考院校在线答案
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">24、<span lang="EN-US" style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei; color:black;mso-font-kerning:0pt;mso-bidi-language:AR">PC</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">机中，既可作为八位又可作为十六位寄存器使用的寄存器为<span lang="EN-US">AX</span>、<span lang="EN-US">BX</span>、<span lang="EN-US">CX</span>、<span lang="EN-US">DX</span>。</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">1、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">有一个由<span lang="EN-US">20</span>个字组成的存储区，其起始处段地址为<span lang="EN-US">4701H</span>，偏移地址为<span lang="EN-US">2012H</span>。试写出该存储区首单元和末单元的物理地址分别为<span lang="EN-US">49022H</span>和<span lang="EN-US">49048H</span>。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">3、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">在<span lang="EN-US">1000H</span>单元中有一条二字节指令<span lang="EN-US">JMP SHORT LAB</span>，如果其中的偏移量分别为<span lang="EN-US">30H</span>、<span lang="EN-US">6CH</span>、<span lang="EN-US">0B8H</span>，则转向地址<span lang="EN-US">LAB</span>的值分别为<span lang="EN-US">1030H</span>、<span lang="EN-US">106CH</span>、<span lang="EN-US">10B8H</span>。</span><span lang="EN-US" style="font-size:12.0pt"> <o:p></o:p></span></p> <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan"><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> <o:p> </o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">8、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">要求屏蔽寄存器<span lang="EN-US">AL</span>第<span lang="EN-US">0,1</span>两位<span lang="EN-US">,</span>则要执行指令<span lang="EN-US">AND AL,0FCH;</span>如果要求把<span lang="EN-US">AL</span>的第<span lang="EN-US">0,1</span>位变反，可使用指令<span lang="EN-US">XOR AL,03H</span>。</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">4、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">将十六进制数<span lang="EN-US">CDH</span>化为十进制是<span lang="EN-US">205</span>，化为二进制是<span lang="EN-US">11001101</span>，化为八进制是<span lang="EN-US">315</span>。</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">5、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">指令<span lang="EN-US">MOV BYTE PTR [BX], 1000</span>有错，错误为<span lang="EN-US">1000</span>超过了一个字节的范围。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">23、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">计算机中有一个“<span lang="EN-US">01000001</span>”编码，如果把它认为是无符号数，它是十进制的<span lang="EN-US">65</span>，如果认为它是<span lang="EN-US">BCD</span>码，则表示<span lang="EN-US">41</span>，如果它是某个<span lang="EN-US">ASCII</span>码，则代表字符<span lang="EN-US">A</span>。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">38、<span lang="EN-US" style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei; color:black;mso-font-kerning:0pt;mso-bidi-language:AR">CPU</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">的标志寄存器中标志位，可以分为两大类，其中一类称为状态标志位，另一类称为控制标志位。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">37、<span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">将十六进制数<span lang="EN-US">2EH</span>化为十进制是<span lang="EN-US">62</span>，将十六进制数<span lang="EN-US">10H</span>化为二进制是<span lang="EN-US">11111</span>，化为八进制是<span lang="EN-US">37</span>。</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan">14、<span lang="EN-US" style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei; color:black;mso-font-kerning:0pt;mso-bidi-language:AR">IP</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black; mso-font-kerning:0pt;mso-bidi-language:AR">称为指令指示器，它用来存放代码段中的偏移地址（或<span lang="EN-US">EA</span>）。</span><span lang="EN-US" style="font-size:12.0pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>