全国计算机三级嵌入式整套题库含答案+视频资源.zip
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全国计算机三级嵌入式整套题库含答案+视频资源（2021年）都是干货，预祝大家考试顺利，过！过！过！PS：大家仔细的看一下资料获取方式哈，感谢配合，资料整理不易。 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/bg1.jpg"/><div class="c x0 y1 w2 h0"><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y3 ff2 fs0 fc0 sc1 ls0 ws0">全国计算机等级考<span class="_ _0"></span>试三嵌入式<span class="_ _0"></span>系统开发技术题库第<span class="_ _1"> </span><span class="ff1 sc0">1<span class="_"> </span></span>套<span class="ff1 sc0"> </span></div><div class="t m0 x1 h3 y4 ff2 fs0 fc0 sc1 ls0 ws0">一、选择题<span class="_ _0"></span><span class="ff3"> </span></div><div class="t m0 x1 h4 y5 ff4 fs0 fc0 sc0 ls0 ws0">1:<span class="ff5">嵌入式系统是一类特殊的计算机系统。下列产品中不属于嵌入式系统的是（）。</span> </div><div class="t m0 x2 h4 y6 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">电饭煲</span> </div><div class="t m0 x2 h4 y7 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">路由器</span> </div><div class="t m0 x2 h4 y8 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">巨型机</span> </div><div class="t m0 x2 h4 y9 ff4 fs0 fc0 sc0 ls0 ws0">D:POS<span class="ff5">机</span> </div><div class="t m0 x1 h4 ya ff4 fs0 fc0 sc0 ls0 ws0">2:<span class="ff5">嵌入式系统硬件的核心是</span>CPU<span class="ff5">。下面关于嵌入式系统</span>CPU<span class="ff5">特点的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 yb ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">支持实时处理</span> </div><div class="t m0 x2 h4 yc ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">低功耗</span> </div><div class="t m0 x2 h4 yd ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">字长在</span>16<span class="ff5">位以下</span> </div><div class="t m0 x2 h4 ye ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">集成了测试电路</span> </div><div class="t m0 x1 h4 yf ff4 fs0 fc0 sc0 ls0 ws0">3:<span class="ff5">下面关于微控制器的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y10 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">微控制器将整个计算机硬件的大部甚至全部电路集成在一块芯片中</span> </div><div class="t m0 x2 h4 y11 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">微控制器品种和数量最多，在过程控制、<span class="_ _2"></span>机电一体化产品、<span class="_ _2"></span>智能仪器仪表、<span class="_ _2"></span>家用电器、计</span></div><div class="t m0 x3 h4 y12 ff5 fs0 fc0 sc0 ls0 ws0">算机网络及通信等方面得到了广泛应用<span class="ff4"> </span></div><div class="t m0 x2 h4 y13 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">微控制器的英文缩写是</span>MCU </div><div class="t m0 x2 h4 y14 ff4 fs0 fc0 sc0 ls0 ws0">D:8<span class="ff5">位的微控制器现在已基本淘汰</span> </div><div class="t m0 x1 h4 y15 ff4 fs0 fc0 sc0 ls0 ws0">4:<span class="ff5">片上系统（</span>SoC<span class="ff5">）也称为系统级芯片，下面关于</span>SoC<span class="ff5">叙述中错误的是（）。</span> </div><div class="t m0 x2 h4 y16 ff4 fs0 fc0 sc0 ls0 ws0">A:SoC<span class="ff5">芯片中只有一个</span>CPU<span class="ff5">或</span>DSP </div><div class="t m0 x2 h4 y17 ff4 fs0 fc0 sc0 ls0 ws0">B:SoC<span class="ff5">芯片可以分为通用</span>SoC<span class="ff5">芯片和专用</span>SoC<span class="ff5">芯片两大类</span> </div><div class="t m0 x2 h4 y18 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">专用</span>SoC<span class="ff5">芯片可分为定制的嵌入式处理芯片和现场可编程嵌入式处理芯片两类</span> </div><div class="t m0 x2 h4 y19 ff4 fs0 fc0 sc0 ls0 ws0">D:FPGA<span class="ff5">芯片可以反复地编程、<span class="_ _3"></span>擦除、<span class="_ _3"></span>使用，<span class="_ _3"></span>在<span class="_ _2"></span>较短时间内就可完成电路的输入、<span class="_ _3"></span>编译、<span class="_ _3"></span>优化、</span></div><div class="t m0 x3 h4 y1a ff5 fs0 fc0 sc0 ls0 ws0">仿真，直至芯片的制作<span class="ff4"> </span></div><div class="t m0 x1 h4 y1b ff4 fs0 fc0 sc0 ls0 ws0">5:<span class="ff5">数码相机是嵌入式系统的典型应用之一。下面关于数码相机的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y1c ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">它由前端和后端两部分组成，前端负责数字图像获取，后端负责数字图像的处理</span> </div><div class="t m0 x2 h4 y1d ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">后端通常是以嵌入式</span>DSP<span class="ff5">作为核心的</span>SoC<span class="ff5">芯片，</span>DSP<span class="ff5">用于完成数字图像处理</span> </div><div class="t m0 x2 h4 y1e ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">负责进行数码相机操作控制（如镜头变焦、快门控制等）是一个</span>32<span class="ff5">位的</span>MCU </div><div class="t m0 x2 h4 y1f ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">高端数码相机配置有实时操作系统和图像处理软件</span> </div><div class="t m0 x1 h4 y20 ff4 fs0 fc0 sc0 ls0 ws0">6:<span class="ff5">电子书阅读器中存储的一本中文长篇小说，大小为</span>128KB<span class="ff5">，文件格式为</span>.txt<span class="ff5">，试问该小说包含</span></div><div class="t m0 x4 h4 y21 ff5 fs0 fc0 sc0 ls0 ws0">的汉字大约有多少万字？（）<span class="ff4"> </span></div><div class="t m0 x2 h4 y22 ff4 fs0 fc0 sc0 ls0 ws0">A:6<span class="ff5">万字</span> </div><div class="t m0 x2 h4 y23 ff4 fs0 fc0 sc0 ls0 ws0">B:12<span class="ff5">万字</span> </div><div class="t m0 x2 h4 y24 ff4 fs0 fc0 sc0 ls0 ws0">C:25<span class="ff5">万字</span> </div><div class="t m0 x2 h4 y25 ff4 fs0 fc0 sc0 ls0 ws0">D:40<span class="ff5">万字</span> </div><div class="t m0 x1 h4 y26 ff4 fs0 fc0 sc0 ls0 ws0">7:<span class="ff5">数字视频信息的数据量相当大，<span class="_ _4"></span>通常需要进行压缩处理之后才进行传输和存储。<span class="_ _4"></span>目前数字有线</span></div><div class="t m0 x4 h4 y27 ff5 fs0 fc0 sc0 ls0 ws0">电视所传输的数字视频采用的压缩编码标准是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y28 ff4 fs0 fc0 sc0 ls0 ws0">A:MPEG-1 </div><div class="t m0 x2 h4 y29 ff4 fs0 fc0 sc0 ls0 ws0">B:MPEG-2 </div><div class="t m0 x2 h4 y2a ff4 fs0 fc0 sc0 ls0 ws0">C:MPEG-4 </div><div class="t m0 x2 h4 y2b ff4 fs0 fc0 sc0 ls0 ws0">D:MPEG-7 </div><div class="t m0 x1 h4 y2c ff4 fs0 fc0 sc0 ls0 ws0">8:<span class="ff5">下面是</span>IP<span class="ff5">协议中</span>C<span class="ff5">类</span>IP<span class="ff5">地址有关规定的叙述，其中正确的是（）。</span> </div><div class="t m0 x2 h4 y2d ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">它适用于中型网络</span> </div><div class="t m0 x2 h4 y2e ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">它所在的网络最多只能连接</span>254<span class="ff5">台主机</span> </div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/bg2.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x2 h4 y2f ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">它不能用于多目的地址发送（组播）</span> </div><div class="t m0 x2 h4 y30 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">它的二进制表示中最高</span>3<span class="ff5">位一定是“101”</span> </div><div class="t m0 x1 h4 y31 ff4 fs0 fc0 sc0 ls0 ws0">9:<span class="ff5">对于嵌入式处理器内核的分类，以下说法正确的是（）。</span> </div><div class="t m0 x2 h4 y32 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">按照字长可分为</span>8<span class="ff5">位结构和</span>32<span class="ff5">位结构</span> </div><div class="t m0 x2 h4 y33 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">按照存储结构可分为</span>RISC<span class="ff5">和哈佛结构</span> </div><div class="t m0 x2 h4 y34 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">按照体系结构可分为</span>CISC<span class="ff5">和</span>RISC<span class="ff5">结构</span> </div><div class="t m0 x2 h4 y35 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">按照指令结构可分为冯</span>.<span class="ff5">诺依曼结构和哈佛结构</span> </div><div class="t m0 x1 h4 y36 ff4 fs0 fc0 sc0 ls0 ws0">10:<span class="ff5">不属于</span>ARM<span class="ff5">内核主要特点的是（）。</span> </div><div class="t m0 x2 h4 y37 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">功耗低</span> </div><div class="t m0 x2 h4 y38 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">功能强大</span> </div><div class="t m0 x2 h4 y39 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">采用</span>RISC<span class="ff5">结构</span> </div><div class="t m0 x2 h4 y3a ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">全部采用哈佛结构</span> </div><div class="t m0 x1 h4 y3b ff4 fs0 fc0 sc0 ls0 ws0">11:<span class="ff5">以下关于</span>ARM<span class="ff5">处理器内核说法正确的是（）。</span> </div><div class="t m0 x2 h4 y3c ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">经典</span>ARM<span class="ff5">处理器包括</span>Cortex-M<span class="ff5">、</span>Cortex-R<span class="ff5">和</span>Cortex-A<span class="ff5">三大类</span> </div><div class="t m0 x2 h4 y3d ff4 fs0 fc0 sc0 ls0 ws0">B:Cortex-A<span class="ff5">系列为应用</span>Cortex<span class="ff5">处理器，主要面向高端应用设计</span> </div><div class="t m0 x2 h4 y3e ff4 fs0 fc0 sc0 ls0 ws0">C:Cortex-M<span class="ff5">系列为面向控制领域的实时嵌入式处理器</span> </div><div class="t m0 x2 h4 y3f ff4 fs0 fc0 sc0 ls0 ws0">D:ARM11<span class="ff5">性能优于</span>Cortex-A5,<span class="ff5">但低于</span>Cortex-A15 </div><div class="t m0 x1 h4 y40 ff4 fs0 fc0 sc0 ls0 ws0">12:<span class="ff5">以下关于</span>ARM<span class="ff5">处理器工作状态说法错误的是（）。</span> </div><div class="t m0 x2 h4 y41 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">工作状态包括</span>ARM<span class="ff5">状态、</span>Thumb<span class="ff5">及</span>Thumb-2<span class="ff5">状态和调试状态三种</span> </div><div class="t m0 x2 h4 y42 ff4 fs0 fc0 sc0 ls0 ws0">B:ARM<span class="ff5">状态既支持</span>16<span class="ff5">位指令宽度也支持</span>32<span class="ff5">位指令宽度</span> </div><div class="t m0 x2 h4 y43 ff4 fs0 fc0 sc0 ls0 ws0">C:Thumb<span class="ff5">状态或</span>Thumb-2<span class="ff5">状态下代码密度大于</span>ARM<span class="ff5">状态，占用存储空间较小</span> </div><div class="t m0 x2 h4 y44 ff4 fs0 fc0 sc0 ls0 ws0">D:ARM<span class="ff5">处理器复位后总处于</span>ARM<span class="ff5">状态</span> </div><div class="t m0 x1 h4 y45 ff4 fs0 fc0 sc0 ls0 ws0">13:<span class="ff5">如果要选择</span>ARM<span class="ff5">处理器工作在外部中断模式，<span class="_ _4"></span>允许外部中断<span class="ff4">IRQ</span>，<span class="_ _4"></span>禁止快速中断<span class="ff4">FIQ,</span>使用<span class="ff4">Thumb</span></span></div><div class="t m0 x4 h4 y46 ff5 fs0 fc0 sc0 ls0 ws0">工作状态，则需要设置的寄存器是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y47 ff4 fs0 fc0 sc0 ls0 ws0">A:PSP </div><div class="t m0 x2 h4 y48 ff4 fs0 fc0 sc0 ls0 ws0">B:MSP </div><div class="t m0 x2 h4 y49 ff4 fs0 fc0 sc0 ls0 ws0">C:CPSR </div><div class="t m0 x2 h4 y4a ff4 fs0 fc0 sc0 ls0 ws0">D:SPSR </div><div class="t m0 x1 h4 y4b ff4 fs0 fc0 sc0 ls0 ws0">14:<span class="ff5">已知内存</span>0x80000000<span class="ff5">中的内容为</span>0x33, 0x80000001<span class="ff5">中的内容为</span>0x31, 0x80000002<span class="ff5">中的内容为</span></div><div class="t m0 x4 h4 y4c ff4 fs0 fc0 sc0 ls0 ws0">0x30, 0x80000003<span class="ff5">中的内容为</span>0x32,<span class="ff5">则</span>ARM<span class="ff5">在大端模式下地址</span>0x80000000<span class="ff5">所指示的一个字为（）。</span> </div><div class="t m0 x2 h4 y4d ff4 fs0 fc0 sc0 ls0 ws0">A:0x33303132 </div><div class="t m0 x2 h4 y4e ff4 fs0 fc0 sc0 ls0 ws0">B:0x32303133 </div><div class="t m0 x2 h4 y4f ff4 fs0 fc0 sc0 ls0 ws0">C:0x32303331 </div><div class="t m0 x2 h4 y50 ff4 fs0 fc0 sc0 ls0 ws0">D:0x33313032 </div><div class="t m0 x1 h4 y51 ff4 fs0 fc0 sc0 ls0 ws0">15:<span class="ff5">在</span>Thumb<span class="ff5">指令集中，</span>32<span class="ff5">位有效立即数是由</span>8<span class="ff5">位立即数通过下面哪一种操作而间接得到的（）。</span> </div><div class="t m0 x2 h4 y52 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">左移</span> </div><div class="t m0 x2 h4 y53 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">右移</span> </div><div class="t m0 x2 h4 y54 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">循环左移</span> </div><div class="t m0 x2 h4 y55 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">循环右移</span> </div><div class="t m0 x1 h4 y56 ff4 fs0 fc0 sc0 ls0 ws0">16:ARM<span class="ff5">处理器在指令</span>LDR R2<span class="ff5">，</span>[R5<span class="ff5">，</span>#2]<span class="ff5">！执行后，</span>R5<span class="ff5">中的值为（）。</span> </div><div class="t m0 x2 h4 y57 ff4 fs0 fc0 sc0 ls0 ws0">A:R5<span class="ff5">不变</span> </div><div class="t m0 x2 h4 y58 ff4 fs0 fc0 sc0 ls0 ws0">B:R5=R5+2 </div><div class="t m0 x2 h4 y59 ff4 fs0 fc0 sc0 ls0 ws0">C:R5=R2+2 </div><div class="t m0 x2 h4 y5a ff4 fs0 fc0 sc0 ls0 ws0">D:R5=2 </div><div class="t m0 x1 h4 y5b ff4 fs0 fc0 sc0 ls0 ws0">17:<span class="ff5">将</span>ARM<span class="ff5">处理器</span>R0<span class="ff5">中的一个字节的数据，<span class="_ _3"></span>存入由<span class="ff4">R1+4</span>指示的内存区域，<span class="_ _5"></span>且地址自动更新，<span class="_ _5"></span>则<span class="_ _0"></span>使用</span></div><div class="t m0 x4 h4 y5c ff5 fs0 fc0 sc0 ls0 ws0">的<span class="ff4">ARM</span>指令是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y5d ff4 fs0 fc0 sc0 ls0 ws0">A:STR R0,[R1,#4] </div><div class="t m0 x2 h4 y5e ff4 fs0 fc0 sc0 ls0 ws0">B:STRH R0,[R1,#4]! </div><div class="t m0 x2 h4 y5f ff4 fs0 fc0 sc0 ls0 ws0">C:STRH R0,[R1,#4] </div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/bg3.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x2 h4 y2f ff4 fs0 fc0 sc0 ls0 ws0">D:STRB R0,[R1,#4]! </div><div class="t m0 x1 h4 y30 ff4 fs0 fc0 sc0 ls0 ws0">18:<span class="ff5">在以下</span>ARM<span class="ff5">处理器的指令操作码中可让寄存器</span>R1<span class="ff5">中的指定位“置位”的指令操作码是（）。</span> </div><div class="t m0 x2 h4 y31 ff4 fs0 fc0 sc0 ls0 ws0">A:MOV </div><div class="t m0 x2 h4 y32 ff4 fs0 fc0 sc0 ls0 ws0">B:AND </div><div class="t m0 x2 h4 y33 ff4 fs0 fc0 sc0 ls0 ws0">C:ADD </div><div class="t m0 x2 h4 y34 ff4 fs0 fc0 sc0 ls0 ws0">D:ORR </div><div class="t m0 x1 h4 y35 ff4 fs0 fc0 sc0 ls0 ws0">19:<span class="ff5">下面关于嵌入式系统的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y36 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">嵌入式系统常用的电源模块有</span>AC-DC<span class="ff5">模块、</span>DC-DC<span class="ff5">模块或</span>LDO<span class="ff5">模块</span> </div><div class="t m0 x2 h4 y37 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">大部分嵌入式处理器只能使用内部时钟信号发生器，不能使用外部时钟信号源</span> </div><div class="t m0 x2 h4 y38 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">若嵌入式处理器芯片的系统复位引脚为</span>nRESET<span class="ff5">，则表示低电平复位</span> </div><div class="t m0 x2 h4 y39 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">基于</span>ARM<span class="ff5">处理器内核的嵌入式处理器芯片都有调试接口</span> </div><div class="t m0 x1 h4 y3a ff4 fs0 fc0 sc0 ls0 ws0">20:<span class="ff5">典型的嵌入式系统硬件由嵌入式最小硬件系统及相关的通道或接口组成，若一个嵌入式系统</span></div><div class="t m0 x4 h4 y3b ff5 fs0 fc0 sc0 ls0 ws0">需要完成模拟量输入功能，该功能由下面列出的嵌入式系统的哪个通道实现？（）<span class="ff4"> </span></div><div class="t m0 x2 h4 y3c ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">前向通道</span> </div><div class="t m0 x2 h4 y3d ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">后向通道</span> </div><div class="t m0 x2 h4 y3e ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">人机交互通道</span> </div><div class="t m0 x2 h4 y3f ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">相互互连通道</span> </div><div class="t m0 x1 h4 y40 ff4 fs0 fc0 sc0 ls0 ws0">21:<span class="ff5">下面与</span>AMBA<span class="ff5">（</span>Advanced <span class="_ _6"></span>Microcontroller <span class="_ _6"></span>Bu<span class="_ _2"></span>s <span class="_ _7"></span>Architecture<span class="ff5">）有关的叙述中，<span class="_ _2"></span>错误的是<span class="_ _2"></span>（）<span class="_ _2"></span>。<span class="_ _8"></span><span class="ff4"> </span></span></div><div class="t m0 x2 h4 y41 ff4 fs0 fc0 sc0 ls0 ws0">A:AMBA<span class="ff5">是</span>ARM<span class="ff5">公司公布的用于连接和管理片上系统中各功能模块的开放标准和片上互连规范</span> </div><div class="t m0 x2 h4 y42 ff4 fs0 fc0 sc0 ls0 ws0">B:AMBA<span class="ff5">规定了</span>ARM<span class="ff5">处理器内核与处理器内部</span>RAM<span class="ff5">、</span>DMA<span class="ff5">以及高带宽外部存储器等快速组件的接</span></div><div class="t m0 x3 h4 y43 ff5 fs0 fc0 sc0 ls0 ws0">口标准<span class="ff4"> </span></div><div class="t m0 x2 h4 y44 ff4 fs0 fc0 sc0 ls0 ws0">C:ARM<span class="ff5">处理器内核与外围端口及慢速设备接口组件的接口标准不包含在</span>AMBA<span class="ff5">规范中</span> </div><div class="t m0 x2 h4 y45 ff4 fs0 fc0 sc0 ls0 ws0">D:AMBA<span class="ff5">有多个版本，性能随版本的发展而逐步提高</span> </div><div class="t m0 x1 h4 y46 ff4 fs0 fc0 sc0 ls0 ws0">22:<span class="ff5">以</span>ARM<span class="ff5">内核为基础的嵌入式处理器芯片采用系统总线与外围总线的层次结构方式构建片上系</span></div><div class="t m0 x4 h4 y47 ff5 fs0 fc0 sc0 ls0 ws0">统，下面列出的组件中，不与外围总线相连的组件是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y48 ff4 fs0 fc0 sc0 ls0 ws0">A:UART </div><div class="t m0 x2 h4 y49 ff4 fs0 fc0 sc0 ls0 ws0">B:DMA<span class="ff5">控制器</span> </div><div class="t m0 x2 h4 y4a ff4 fs0 fc0 sc0 ls0 ws0">C:ADC </div><div class="t m0 x2 h4 y4b ff4 fs0 fc0 sc0 ls0 ws0">D:USB<span class="ff5">设备</span> </div><div class="t m0 x1 h4 y4c ff4 fs0 fc0 sc0 ls0 ws0">23:<span class="ff5">基于</span>ARM<span class="ff5">内核的嵌入式芯片中包含定时</span>/<span class="ff5">计数组件，<span class="_ _9"></span>下面列出的哪一项不属于定时<span class="ff4">/</span>计数组件？</span></div><div class="t m0 x4 h4 y4d ff5 fs0 fc0 sc0 ls0 ws0">（）<span class="ff4"> </span></div><div class="t m0 x2 h4 y4e ff4 fs0 fc0 sc0 ls0 ws0">A:ADC </div><div class="t m0 x2 h4 y4f ff4 fs0 fc0 sc0 ls0 ws0">B:Timer </div><div class="t m0 x2 h4 y50 ff4 fs0 fc0 sc0 ls0 ws0">C:RTC </div><div class="t m0 x2 h4 y51 ff4 fs0 fc0 sc0 ls0 ws0">D:WDT </div><div class="t m0 x1 h4 y52 ff4 fs0 fc0 sc0 ls0 ws0">24:<span class="ff5">基于</span>ARM<span class="ff5">内核的嵌入式芯片中包含互连通信组件，<span class="_ _a"></span>下面列出的哪一项不属于互连通信组件？<span class="_ _a"></span>（）<span class="_ _8"></span><span class="ff4"> </span></span></div><div class="t m0 x2 h4 y53 ff4 fs0 fc0 sc0 ls0 ws0">A:DAC </div><div class="t m0 x2 h4 y54 ff4 fs0 fc0 sc0 ls0 ws0">B:SPI </div><div class="t m0 x2 h4 y55 ff4 fs0 fc0 sc0 ls0 ws0">C:I2C </div><div class="t m0 x2 h4 y56 ff4 fs0 fc0 sc0 ls0 ws0">D:CAN </div><div class="t m0 x1 h4 y57 ff4 fs0 fc0 sc0 ls0 ws0">25:<span class="ff5">下面是关于嵌入式系统使用的存储器的叙述，其中错误的是（）。</span> </div><div class="t m0 x2 h4 y58 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">系统使用的</span>RAM<span class="ff5">有</span>SRAM<span class="ff5">、</span>DRAM<span class="ff5">等多种</span> </div><div class="t m0 x2 h4 y59 ff4 fs0 fc0 sc0 ls0 ws0">B:Flash<span class="ff5">存储器分为</span>NOR Flash<span class="ff5">和</span>NAND Flash<span class="ff5">两种</span> </div><div class="t m0 x2 h4 y5a ff4 fs0 fc0 sc0 ls0 ws0">C:FRAM<span class="ff5">已得到使用</span> </div><div class="t m0 x2 h4 y5b ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">目前还没有使用</span>Cache<span class="ff5">存储器</span> </div><div class="t m0 x1 h4 y5c ff4 fs0 fc0 sc0 ls0 ws0">26:<span class="ff5">面关于串行外设接口</span>SPI<span class="ff5">的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y5d ff4 fs0 fc0 sc0 ls0 ws0">A:SPI<span class="ff5">一般使用</span>4<span class="ff5">条信号线：</span>SCK<span class="ff5">、</span>MISO<span class="ff5">、</span>MOSI<span class="ff5">和</span>SSEL </div><div class="t m0 x2 h4 y5e ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">采用</span>SPI<span class="ff5">可以构成“一主一从式”系统</span> </div><div class="t m0 x2 h4 y5f ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">采用</span>SPI<span class="ff5">可以构成“一主多从式”系统</span> </div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/bg4.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x2 h4 y2f ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">采用</span>SPI<span class="ff5">不能构成“多主多从式”系统</span> </div><div class="t m0 x1 h4 y30 ff4 fs0 fc0 sc0 ls0 ws0">27:<span class="ff5">下面关于</span>USB<span class="ff5">接口的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y31 ff4 fs0 fc0 sc0 ls0 ws0">A:USB<span class="ff5">支持热插拔</span> </div><div class="t m0 x2 h4 y32 ff4 fs0 fc0 sc0 ls0 ws0">B:USB 2.0<span class="ff5">是目前传输速率最高的</span>USB<span class="ff5">版本</span> </div><div class="t m0 x2 h4 y33 ff4 fs0 fc0 sc0 ls0 ws0">C:USB<span class="ff5">接口提供了内置电源</span> </div><div class="t m0 x2 h4 y34 ff4 fs0 fc0 sc0 ls0 ws0">D:USB 2.0<span class="ff5">采用半双工差分方式传送信息</span> </div><div class="t m0 x1 h4 y35 ff4 fs0 fc0 sc0 ls0 ws0">28:8<span class="ff5">段共阴极</span>LED<span class="ff5">数码管如下图所示，<span class="_ _2"></span>为使其显示数字<span class="ff4">5</span>，<span class="_ _2"></span>其段代码<span class="_ _2"></span>（高位到低位的顺序是：<span class="_ _2"></span><span class="ff4">dp<span class="_ _0"></span> <span class="_ _6"></span>g </span></span></div><div class="t m0 x4 h4 y36 ff4 fs0 fc0 sc0 ls0 ws0">f e d c b a<span class="ff5">）为</span> </div><div class="t m0 x2 h4 y37 ff4 fs0 fc0 sc0 ls0 ws0">A:0x7F </div><div class="t m0 x2 h4 y38 ff4 fs0 fc0 sc0 ls0 ws0">B:0xC0 </div><div class="t m0 x2 h4 y39 ff4 fs0 fc0 sc0 ls0 ws0">C:0x80 </div><div class="t m0 x2 h4 y3a ff4 fs0 fc0 sc0 ls0 ws0">D:0x6D </div><div class="t m0 x1 h4 y3b ff4 fs0 fc0 sc0 ls0 ws0">29:IEEE<span class="ff5">的实时</span>UNIX<span class="ff5">分委会认为实时操作系统应该具备若干特征，下面哪一项不是实时操作系统</span></div><div class="t m0 x4 h4 y3c ff5 fs0 fc0 sc0 ls0 ws0">必须具有的特征？（）<span class="ff4"> </span></div><div class="t m0 x2 h4 y3d ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">具有异步</span>I/O<span class="ff5">和中断处理能力</span> </div><div class="t m0 x2 h4 y3e ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">任务切换时间和中断延迟时间确定</span> </div><div class="t m0 x2 h4 y3f ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">优先级中断和调度</span> </div><div class="t m0 x2 h4 y40 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">轮转调度</span> </div><div class="t m0 x1 h4 y41 ff4 fs0 fc0 sc0 ls0 ws0">30:<span class="ff5">一般按照对外部事件的响应时间快慢，将嵌入式操作系统分成强实时型和普通实时型。以下</span></div><div class="t m0 x4 h4 y42 ff5 fs0 fc0 sc0 ls0 ws0">均为强实时嵌入式操作系统的是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y43 ff4 fs0 fc0 sc0 ls0 ws0">A:VxWorks<span class="ff5">，</span>pSOS<span class="ff5">，</span>uC/OS-II </div><div class="t m0 x2 h4 y44 ff4 fs0 fc0 sc0 ls0 ws0">B:VxWorks<span class="ff5">，</span>pSOS<span class="ff5">，</span>Windows Embedded </div><div class="t m0 x2 h4 y45 ff4 fs0 fc0 sc0 ls0 ws0">C:pSOS<span class="ff5">，</span>uC/OS-II<span class="ff5">，</span>uCLinux </div><div class="t m0 x2 h4 y46 ff4 fs0 fc0 sc0 ls0 ws0">D:pSOS<span class="ff5">，</span>Windows Embedded<span class="ff5">，</span>Symbian </div><div class="t m0 x1 h4 y47 ff4 fs0 fc0 sc0 ls0 ws0">31:UNIX<span class="ff5">、嵌入式</span>Linux<span class="ff5">、</span>WinCE<span class="ff5">、</span>Mac <span class="_ _4"></span>OS<span class="ff5">、</span>Android <span class="_ _4"></span>OS<span class="ff5">和</span>DOS<span class="ff5">操作系统是典型的单内核（也称为宏</span></div><div class="t m0 x4 h4 y48 ff5 fs0 fc0 sc0 ls0 ws0">内核）操作系统，相对于微内核操作系统，下面不属于单内核操作系统缺点的是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y49 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">占用内存空间大</span> </div><div class="t m0 x2 h4 y4a ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">缺乏可扩展性而不方便移植</span> </div><div class="t m0 x2 h4 y4b ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">内核切换太快</span> </div><div class="t m0 x2 h4 y4c ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">可靠性较低</span> </div><div class="t m0 x1 h4 y4d ff4 fs0 fc0 sc0 ls0 ws0">32:<span class="ff5">如下几种</span>Bootloader<span class="ff5">中，用于</span>Linux <span class="ff5">操作系统引导程序加载时所支持不同体系结构处理器种</span></div><div class="t m0 x4 h4 y4e ff5 fs0 fc0 sc0 ls0 ws0">类最多的是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y4f ff4 fs0 fc0 sc0 ls0 ws0">A:LILO </div><div class="t m0 x2 h4 y50 ff4 fs0 fc0 sc0 ls0 ws0">B:GRUB </div><div class="t m0 x2 h4 y51 ff4 fs0 fc0 sc0 ls0 ws0">C:U-Boot </div><div class="t m0 x2 h4 y52 ff4 fs0 fc0 sc0 ls0 ws0">D:Loadlin </div><div class="t m0 x1 h4 y53 ff4 fs0 fc0 sc0 ls0 ws0">33:<span class="ff5">关于</span>uC/OS-II<span class="ff5">的基本特点，以下说法错误的是（）。</span> </div><div class="t m0 x2 h4 y54 ff4 fs0 fc0 sc0 ls0 ws0">A:uC/OS-II<span class="ff5">是抢占式实时操作系统内核</span> </div><div class="t m0 x2 h4 y55 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">由于存在内核任务，用户编写的应用程序最多可以有</span>60<span class="ff5">个任务</span> </div><div class="t m0 x2 h4 y56 ff4 fs0 fc0 sc0 ls0 ws0">C:uC/OS-II<span class="ff5">不支持时间片轮转调度法</span> </div><div class="t m0 x2 h4 y57 ff4 fs0 fc0 sc0 ls0 ws0">D:uC/OS-II<span class="ff5">允许每个任务有不同的栈空间</span> </div><div class="t m0 x1 h4 y58 ff4 fs0 fc0 sc0 ls0 ws0">34:<span class="ff5">在</span>uC/OS-II<span class="ff5">中有多种方法可以保护任务之间的共享数据和提供任务之间的通信。其中不能达</span></div><div class="t m0 x4 h4 y59 ff5 fs0 fc0 sc0 ls0 ws0">到保护目的的方法是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y5a ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">利用宏</span>OS_ENTER_CRITICAL()<span class="ff5">和</span>OS_EXIT_CRITICAL()<span class="ff5">来关闭中断和打开中断</span> </div><div class="t m0 x2 h4 y5b ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">利用函数</span>OSSchedLock()<span class="ff5">和</span>OSSchedUnlock()<span class="ff5">对任务调度函数上锁和开锁</span> </div><div class="t m0 x2 h4 y5c ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">利用信号量、互斥信号量、邮箱和消息队列进行任务间通信</span> </div><div class="t m0 x2 h4 y5d ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">利用内存文件进行任务间的大规模数据共享</span> </div><div class="t m0 x1 h4 y5e ff4 fs0 fc0 sc0 ls0 ws0">35:<span class="ff5">移植</span>uC/OS-II<span class="ff5">到一个嵌入式系统电路板上正常运行，下面哪个条件不是必须的？（）。</span> </div><div class="t m0 x2 h4 y5f ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">处理器的</span>C<span class="ff5">编译器能产生可重入代码，且用</span>C<span class="ff5">语言就可以打开和关闭中断</span> </div></div><div class="c x5 y60 w3 h5"><div class="t m0 x0 h6 y61 ff6 fs1 fc1 sc0 ls0 ws0">单体内核：大内核，将<span class="ff7">OS</span>的全部功能都做进内核中，包括调度、文件系统、网络、设备驱动器、</div><div class="t m0 x0 h6 y62 ff6 fs1 fc1 sc0 ls0 ws0">存储管理。比如设备驱动管理、资源分配、进程间通信、进程间切换管理、文件系统、存储管</div><div class="t m0 x0 h6 y63 ff6 fs1 fc1 sc0 ls0 ws0">理、网络等。单体内核是指在一大块代码中实际包含了所有操作系统功能，并作为一个单一进程</div><div class="t m0 x0 h6 y64 ff6 fs1 fc1 sc0 ls0 ws0">运行，具有唯一地址空间。大部分<span class="ff7">UNIX</span>（包括<span class="ff7">Linxu</span>）系统都采用的单体内核。微内核：微内核</div><div class="t m0 x0 h6 y65 ff6 fs1 fc1 sc0 ls0 ws0">与单体内核不同，微内核只是将<span class="ff7">OS</span>中最核心的功能加入内核，包括<span class="ff7">IPC</span>通信、地址空间分配和基</div><div class="t m0 x0 h6 y66 ff6 fs1 fc1 sc0 ls0 ws0">本的调度，这些东西处在内核态运行。如：<span class="ff7">WINCE</span>系统。而其他功能如设备驱动、文件系统、存</div><div class="t m0 x0 h6 y67 ff6 fs1 fc1 sc0 ls0 ws0">储管理、网络等作为一个个处于用户态的进程而向外提供某种服务来实现，而且这些处于用户态</div><div class="t m0 x0 h6 y68 ff6 fs1 fc1 sc0 ls0 ws0">的进程可以针对某些特定的应用和环境需求进行定制。有时，也称这些进程为服务器。</div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div><div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/43689759/bg5.jpg"><div class="c x0 y1 w2 h0"><div class="t m0 x2 h4 y2f ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">该电路板的处理器必须具备</span>MMU<span class="ff5">（存储管理单元）</span> </div><div class="t m0 x2 h4 y30 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">处理器支持中断，并且能产生定时中断（通常在</span>10<span class="ff5">至</span>100Hz<span class="ff5">之间）</span> </div><div class="t m0 x2 h4 y31 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">处理器支持能够容纳一定量数据（可能是几千字节）的硬件栈区</span> </div><div class="t m0 x1 h4 y32 ff4 fs0 fc0 sc0 ls0 ws0">36:Nios <span class="_ _6"></span>II<span class="ff5">软核处理器的硬件抽象层<span class="_ _2"></span>（<span class="_ _0"></span><span class="ff4">HAL</span>）<span class="_ _2"></span>系<span class="_ _2"></span>统库是一个轻量级<span class="ff4">C/C++</span>运行时环境，<span class="_ _2"></span>属于单线程</span></div><div class="t m0 x4 h4 y33 ff5 fs0 fc0 sc0 ls0 ws0">的类<span class="ff4">UNIX</span>运行库，关于它所提供的服务如下哪一项说法是错误的（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y34 ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">结合</span>NewLib ANSI C<span class="ff5">标准库，向用户提供熟知的标准库函数</span> </div><div class="t m0 x2 h4 y35 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">提供设备驱动，使用户可以访问系统中的所有设备</span> </div><div class="t m0 x2 h4 y36 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">为系统提供了</span>TCP/IP<span class="ff5">协议栈</span> </div><div class="t m0 x2 h4 y37 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">系统初始化，在</span>main()<span class="ff5">函数之前完成软核处理器</span>Nios<span class="ff5">和运行库环境的初始化任务</span> </div><div class="t m0 x1 h4 y38 ff4 fs0 fc0 sc0 ls0 ws0">37:<span class="ff5">苹果公司的嵌入式移动电子产品风靡全球，</span>iOS<span class="ff5">操作系统也随之为大众所熟悉。根据</span>iOS<span class="ff5">的发</span></div><div class="t m0 x4 h4 y39 ff5 fs0 fc0 sc0 ls0 ws0">展历史，它的前身是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y3a ff4 fs0 fc0 sc0 ls0 ws0">A:DOS </div><div class="t m0 x2 h4 y3b ff4 fs0 fc0 sc0 ls0 ws0">B:UNIX-BSD </div><div class="t m0 x2 h4 y3c ff4 fs0 fc0 sc0 ls0 ws0">C:OS/2 </div><div class="t m0 x2 h4 y3d ff4 fs0 fc0 sc0 ls0 ws0">D:pSOS 4.4 </div><div class="t m0 x1 h4 y3e ff4 fs0 fc0 sc0 ls0 ws0">38:<span class="ff5">以下关于微内核操作系统的叙述中，错误的是（）。</span> </div><div class="t m0 x2 h4 y3f ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">内核小巧，传统操作系统内核中的许多部分都被移出内核</span> </div><div class="t m0 x2 h4 y40 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">接口一致，所有进程请求使用统一接口，进程不区分内核模式和用户模式服务</span> </div><div class="t m0 x2 h4 y41 ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">各个功能模块之间松散耦合，<span class="_ _b"></span>只完成服务功能，<span class="_ _b"></span>系统管理功能交给一个或多个特权服务程</span></div><div class="t m0 x3 h4 y42 ff5 fs0 fc0 sc0 ls0 ws0">序<span class="ff4"> </span></div><div class="t m0 x2 h4 y43 ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">微内核功能扩充方便，而且各个功能之间的切换而引起的开销比较小</span> </div><div class="t m0 x1 h4 y44 ff4 fs0 fc0 sc0 ls0 ws0">39:<span class="ff5">开发嵌入式系统时，<span class="_ _5"></span>需要构建一个宿主机<span class="ff4">-</span>目标机的开发环境。<span class="_ _3"></span>若目标机是裸机，<span class="_ _5"></span>那么为<span class="_ _0"></span>了调</span></div><div class="t m0 x4 h4 y45 ff5 fs0 fc0 sc0 ls0 ws0">试和下载软件需要将调试仿真器连接到目标机的哪一种接口？（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y46 ff4 fs0 fc0 sc0 ls0 ws0">A:SPI<span class="ff5">接口</span> </div><div class="t m0 x2 h4 y47 ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">以太网接口</span> </div><div class="t m0 x2 h4 y48 ff4 fs0 fc0 sc0 ls0 ws0">C:JTAG<span class="ff5">接口</span> </div><div class="t m0 x2 h4 y49 ff4 fs0 fc0 sc0 ls0 ws0">D:USB<span class="ff5">接口</span> </div><div class="t m0 x1 h4 y4a ff4 fs0 fc0 sc0 ls0 ws0">40:<span class="ff5">嵌入式系统的应用形式是多种多样的，不同的嵌入式应用系统，需要选择适合其应用需求的</span></div><div class="t m0 x4 h4 y4b ff5 fs0 fc0 sc0 ls0 ws0">开发工具来进行开发。采用开发工具的主要目的是（）。<span class="ff4"> </span></div><div class="t m0 x2 h4 y4c ff4 fs0 fc0 sc0 ls0 ws0">A:<span class="ff5">提高开发质量，缩短开发周期，降低开发成本</span> </div><div class="t m0 x2 h4 y4d ff4 fs0 fc0 sc0 ls0 ws0">B:<span class="ff5">优化软件代码的存储容量，以便降低存储器的需求</span> </div><div class="t m0 x2 h4 y4e ff4 fs0 fc0 sc0 ls0 ws0">C:<span class="ff5">降低嵌入式系统的功耗</span> </div><div class="t m0 x2 h4 y4f ff4 fs0 fc0 sc0 ls0 ws0">D:<span class="ff5">便于设计需要调用操作系统<span class="_ _c"> </span></span>API<span class="_ _c"> </span><span class="ff5">函数的应用程序</span> </div><div class="t m0 x1 h3 y69 ff2 fs0 fc0 sc1 ls0 ws0">二、填空题<span class="_ _0"></span><span class="ff3"> </span></div><div class="t m0 x1 h4 y6a ff4 fs0 fc0 sc0 ls0 ws0">1:<span class="ff5">为提高</span>SoC<span class="ff5">的设计效率，减少重复开发，通常大多以</span>IP<span class="ff5">核为基础，在单个芯片上集成处理器、</span></div><div class="t m0 x4 h4 y6b ff5 fs0 fc0 sc0 ls0 ws0">存储器和各种接口等组件，<span class="_ _5"></span>组成一个相当完整的计算机系统。<span class="_ _3"></span>按照<span class="ff4">IC</span>设计文件的类型，<span class="_ _5"></span><span class="ff4">IP<span class="ff5">核<span class="_ _0"></span>通常分为</span></span></div><div class="t m0 x4 h4 y6c ff5 fs0 fc0 sc0 ls0 ws0">三种：（<span class="ff4">1</span>）<span class="ff4">__________________</span>核、固核和（<span class="ff4">2</span>）<span class="ff4">__________________</span>核。<span class="ff4"> </span></div><div class="t m0 x1 h4 y6d ff4 fs0 fc0 sc0 ls0 ws0">2:<span class="ff5">目前数码相机中用于存储所拍摄相片的大多是（</span>3<span class="ff5">）</span>__________________<span class="ff5">存储器，假设一台数</span></div><div class="t m0 x4 h4 y6e ff5 fs0 fc0 sc0 ls0 ws0">码相机一次可连续拍摄<span class="ff4">65536</span>色的<span class="ff4">1024 x 1024</span>的彩色相片<span class="ff4">80</span>张，数据压缩比平均是<span class="ff4">4</span>，则它使用的存</div><div class="t m0 x4 h4 y6f ff5 fs0 fc0 sc0 ls0 ws0">储器容量大约是（<span class="ff4">4</span>）<span class="ff4">__________________MB</span>。<span class="ff4"> </span></div><div class="t m0 x1 h4 y70 ff4 fs0 fc0 sc0 ls0 ws0">3:<span class="ff5">无线局域网（</span>WLAN<span class="ff5">）是以太网与无线通信技术相结合的产物。它借助无线电波进行数据传输，</span></div><div class="t m0 x4 h4 y71 ff5 fs0 fc0 sc0 ls0 ws0">所采用的通信协议主要是（<span class="ff4">5</span>）<span class="ff4">__________________</span>，数据传输速率可以达到<span class="ff4">11Mbps</span>、<span class="ff4">54Mbps</span>、（<span class="ff4">6</span>）</div><div class="t m0 x4 h4 y72 ff4 fs0 fc0 sc0 ls0 ws0">___________________Mbps<span class="ff5">甚至更高。</span> </div><div class="t m0 x1 h4 y73 ff4 fs0 fc0 sc0 ls0 ws0">4:<span class="ff5">经典</span>ARM<span class="ff5">处理器有</span>7<span class="ff5">种异常：主要包括复位</span>RESET<span class="ff5">、未定义指令</span>UND<span class="ff5">、软件中断</span>SWI<span class="ff5">、指令预取中</span></div><div class="t m0 x4 h4 y74 ff5 fs0 fc0 sc0 ls0 ws0">止<span class="ff4">PABT</span>、数据访问中止<span class="ff4">DABT</span>、外部中断请求<span class="ff4">IRQ</span>以及（<span class="ff4">7</span>）<span class="ff4">___________________</span>，其中优先级最高的</div><div class="t m0 x4 h4 y75 ff5 fs0 fc0 sc0 ls0 ws0">异常是（<span class="ff4">8</span>）<span class="ff4">__________________</span>。<span class="ff4"> </span></div><div class="t m0 x1 h4 y76 ff4 fs0 fc0 sc0 ls0 ws0">5:ARM<span class="ff5">处理器</span>Cortex<span class="ff5">系列包括</span>Cortex<span class="ff5">嵌入式处理器和</span>Cortex<span class="ff5">应用处理器，其中</span>Cortex<span class="ff5">嵌入式处理</span></div><div class="t m0 x4 h4 y77 ff5 fs0 fc0 sc0 ls0 ws0">器包括主要应用于控制领域的（<span class="ff4">9</span>）<span class="ff4">___________________</span>系列和面向实时应用领域的（<span class="ff4">10</span>）</div></div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>