各大公司电子类招聘题目精选模拟电路

1、Building industry opens up new world of entrepreneurial struggle to build a three provinces of regional central cities-in the Communist x counties the six plenary session members and comrades: today, I was commissioned by the County party Committee Standing Committee, reports to the General Assembly. Consideration of all members and alternates, and comrades attending advice. A, and this year yilai of work recalled this year yilai, in municipal of right led Xia, County solidarity led County peopl

2、e, to science development views for guide, to good activities for mainline, according to a city four modernizations three more of development thought, concentrated poly force, work hard, political, and economic, and culture, and social and party of construction are made has new progress, County rendering out wind fresh are, and career prosperity, and social settled, and people mind into of good situation. (A) facilitating the construction of the project. Firmly establish the scratch project is e

3、conomic, grasping development project is to hold philosophy, to extraordinary efforts to promoting the construction of key projects. Plot 108 key projects for the year, with a total investment of 29.3 billion yuan, iron plate, Josh stone cement waste heat power generation and 13 projects completed, worship of 1.2 million tons of pellets, Hua Yu 80,000 sets of grandparent chicken farming, 47 projects under construction, completed investment of 3.95 billion yuan, annual plan of 69.3%. The first ha

4、lf of the Countys gross domestic product is expected to reached 8.5 billion yuan, and total revenue of 943 million Yuan. (B) structural adjustment achieved remarkable results. Actively transforming the pattern of economic development, industrial ecology, and agricultural modernization and industrialization of services. High x-County • Tin iron circular economy demonstration area, and further expand economic development zone Jing Dian recycle economy ecology industry Park, Park, circular ec

5、onomy and rapid economic development. Focus more on the dialectical relationship between development and environmental protection, energy saving and emission reduction projects play an important role. Vigorously developing agriculture, ecological agriculture, agriculture, modern agricultural clearing along the River Promenade begins to take shape. Key tourism projects is going well, WA Palace area was named top ten most influential cultural relics in Hebei province landscape. Develop new service

6、s, and services with new developments. (C) urban-rural integration process. Promoting three-year difference campaign, battle of two large demolition completed 32 days of 530,000 square meters, exceeded the annual Task 7 months in advance. General big building jiangjun road, bridge and highway bridges, the green heart of the city and other urban construction projects, and focus on building new countryside and new housing model villages, urban and rural areas improve. Highway opened to traffic, Li

7、u Zhang, Qing LAN high-speed x-County section completed by the end of August. Urban and rural模拟电路试题2007-12-16 20:41各大公司电子类招聘题目精选-模拟电路 1、基尔霍夫定理的内容是什么？（仕兰微电子） 2、平板电容公式(C=S/4kd)。（未知） 3、最基本的如三极管曲线特性。（未知） 4、描述反馈电路的概念，列举他们的应用。（仕兰微电子） 5、负反馈种类（电压并联反馈，电流串联反馈，电压串联反馈和电流并联反馈）；负反 馈的优点（降低放大器的增益灵敏度，改变输入电阻和输出电阻，改善放大器的线性和非 线性失真，有效地扩展放大器的通频带，自动调节作用）（未知） 6、放大电路的频率补偿的目的是什么，有哪些方法？（仕兰微电子） 7、频率响应，如：怎么才算是稳定的，如何改变频响曲线的几个方法。（未知） 8、给出一个查分运放，如何相位补偿，并画补偿后的波特图。（凹凸） 9、基本放大电路种类（电压放大器，电流放大器，互导放大器和互阻放大器），优缺 点，特别是广泛采用差分结构的原因。（未知）

8、 10、给出一差分电路，告诉其输出电压Y+和Y-,求共模分量和差模分量。（未知） 电子类公司笔试题精选（包括 模拟电路、数字电路、IC基础、数字电路、微机、信号与系统、嵌入式）2008-02-04 12:38数字电路1、同步电路和异步电路的区别是什么？（仕兰微电子）2、什么是同步逻辑和异步逻辑？（汉王笔试）同步逻辑是时钟之间有固定的因果关系。异步逻辑是各时钟之间没有固定的因果关系。 3、什么是线与逻辑，要实现它，在硬件特性上有什么具体要求？（汉王笔试）线与逻辑是两个输出信号相连可以实现与的功能。在硬件上，要用oc门来实现，由于不用oc门可能使灌电流过大，而烧坏逻辑门。同时在输出端口应加一个上拉电阻。4、什么是Setup 和Holdup时间？（汉王笔试）5、setup和holdup时间,区别.（南山之桥）6、解释setup time和hold time的定义和在时钟信号延迟时的变化。（未知）7、解释setup和hold time violation，画图说明，并说明解决办法。（威盛VIA2003.11.06 上海笔试试题）Setup/hold time 是测试芯片对输入信号和时钟信号之间

9、的时间要求。建立时间是指触发器的时钟信号上升沿到来以前，数据稳定不变的时间。输入信号应提前时钟上升沿（如上升沿有效）T时间到达芯片，这个T就是建立时间-Setup time.如不满足setup time,这个数据就不能被这一时钟打入触发器，只有在下一个时钟上升沿，数据才能被打入触发器。保持时间是指触发器的时钟信号上升沿到来以后，数据稳定不变的时间。如果hold time不够，数据同样不能被打入触发器。建立时间(Setup Time)和保持时间（Hold time）。建立时间是指在时钟边沿前，数据信号需要保持不变的时间。保持时间是指时钟跳变边沿后数据信号需要保持不变的时间。如果不满足建立和保持时间的话，那么DFF将不能正确地采样到数据，将会出现metastability的情况。如果数据信号在时钟沿触发前后持续的时间均超过建立和保持时间，那么超过量就分别被称为建立时间裕量和保持时间裕量。8、说说对数字逻辑中的竞争和冒险的理解，并举例说明竞争和冒险怎样消除。（仕兰微电子）9、什么是竞争与冒险现象？怎样判断？如何消除？（汉王笔试）在组合逻辑中，由于门的输入信号通路中经过了不同的延时，导致到达该门的时间不一致叫竞争。产生毛刺叫冒险。如果布尔式中有相反的信号则可能产生竞争和冒险现象。解决方法：一是添加布尔式的消去项，二是在芯片外部加电容。10、你知道那些常用逻辑电平？TTL与COMS电平可以直接互连吗？（汉王笔试）常用逻辑电平：12V，5V，3.3V；TTL和CMOS不可以直接互连，由于TTL是在0.3-3.6V之间，而CMOS则是有在12V的有在5V的。CMOS输出接到TTL是可以直接互连。TTL接到CMOS需要在输出端口加一上拉电阻接到5V或者12V。11、如何解决亚稳态。（飞利浦大唐笔试）亚稳态是指触发器无法在某个规定时间段内达到一个可确认的状态。当一个触发器进入亚稳态时，既无法预测该单元的输出电平，也无法预测何时输出才能稳定在某个正确的电平上。在这个稳定期间，触发器输出一些中间级电平，或者可能处于振荡状态，并且这种无用的输出电平可以

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