各大公司电子类招聘题目模拟电路doc

1、Buil ding i ndustry ope ns up ne economic, graspi ng devel opmeew worl d of entre nt project is te preneurial str o hold philosophy, tuggle to build a t o extraordi t hree pr ovinces of regi onal central nary efforts to pr omoting the constrcities-in the uction of key prCommunist x countie s the six

2、 ple nary se ssion member oject s. Pl ot 108 key pr oje cts for the year, with a total is and comrades: t nvestment oda y, I was of 29.3 billion yuacommissioned n, iron plate, J by the County party J osh stone cemety Committee Standi nt waste heat di ng Committee, reports to the power ge neration an

3、d 13 e General Assembl proje cts compl eted, worship y. Considerati of 1.2 million of all members a on tons of pellets, nd alter nates, a Hua Yu 80,000 sets a nd comrade s attendi of grandparent chickeng advi ce. A , and this year y n farming, 47 proje cts under ilai of w ork recalle d this year yil

4、ai, i n muni cipa l of right led Xia, r construction, completed i nvestment of 3.95 billion yua n, annuaCounty solidarity led County pe ople , to science l pla n of 69.3%. The first half of the Countys gross domestic development view ic s for gui de, to g ood activitie s for mainli ne, accor product

5、 i s expe cted to rea che d 8.5 billi on yu an, ading t nd total ro a city four modernizati evenue of 943 millions three more on Yuan. (B) str uctural a of development t houg ht, concentrated a djustment achieved remarka ble results. Apoly for ce, w ork har ctively transforming td, political , and e

6、conomic, a he pattern of economind cult ure, and social an c devel opme nt, industrial d party of constructi on are ma ecolog y, and agricultural modernia de ha a s ne w progre ss, County rendering zation and industriali zation g out w ind fresh are, a nd career prosperity, of services. Hig h x-Coun

7、ty T in iron circular eand social settled, a conomy demnd people onstration are mind int a, and furto of good sit her expa nduation. (A) facilitating the e conomic devel opmeconstruction of the nt zone Jing Dia n recyproje ct. Firmly esta blish the scratch cle economy ecology industry Park, Park, pr

8、oje ct is circulareconomy and rapid economic developme ntnt. Focus more on the e dialectical relationship p between developme nt and environmental protection, energy saving and emission re duction projects play an important role. V igorously developing agricultur e, ecological agriculture, agricultu

9、re, modern agricultural clearing along the River Pr r omenade begins to take shape. Key tourism proje cts is going well, WA Pala cece area was named top ten most influential cultural relics i n Hebei provi vi nce landscape. Develop new service s, s, and services with new developments. (C) urban-rura

10、l integration proce ss. Promoting three-y-year difference campaign, battle of two large demolition completed 32 days of 530,000 square meters, exceeded the annual Tsk 7 months in advance. General big building jiangjun road, bri dge and highway bridges, the green heart of the city and other urban con

11、struction proje ct s, and focus on building new countryside and new housing model village e s, urban a nd rural areas improve. Highwayope ned to traffic, Li Li u Zha ng, 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

12、夫定理的内容是什么？（仕兰微电子）2、平板电容公式 (C= S/4 kd) 。（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

13、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）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

14、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 VIA 2003.11.06 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的时间要求。建立时间是指触发器的时

15、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。development work the industr y. Constrsteadily i ucti on of in the pilot counties, to ndustrial park s, just b

16、ui ld pe set up a plaace neighbor tform for the or hood officedevelopment s approved, cha of only attractnge, urba more n and rural communities (Center), immigrant communities, pilprojects into the district, to form agglomeration advaprinciplot projects such as i ntages. A i nnovation s i ntegrated

17、management proje ct. To be pur poseful, targeted iof urba nvn and rural sa nvestment, winitation in or ll have a bor der. (D) mbasis of the Countyaintain social harmony and stabils industrial packaged bundles, ovity. In the erall publcase of tight financiicity and promotion. I al situati n. I nitiat

18、ivon, continue to increase te goi ng, please come ihe input of people, ha n and carry out alla ppy -round, mpeople battle. Urba ulti-lev el and widen ce-range ntral heating a of investmea nd nt aupgrade rural power grids, rural reconstructictivities. The ow nshi p industrial projects, in on of sha i

19、n principle, t bby housing ten major pr t o put to the West ioject ndustrias being delivere l parks. Whad, ha s beet t own proje ct,n overfulfille is t hat td ahead. Stre he output value re ngthenie of the Tow ng of social w nshi p. Sec programs, college entrc ond, w e must grasp t a nce examinatip

20、t he standards seleon to re cted itemcor d heig s. Full accounhts; new rural i t of nsura extend the indnce coverage rate of the ustry chai citys first, launcn and the i ntegration hed i of factorsi n new r of prr ural cooperative medical clioducti on, not only efforts to intrni c co-ordinatioduce a

21、 on; . Perfect Park cateri num ber of scientific ang, a nd te chnol ccommodation, educatil ogical content and higon, re creation and ot h added val ue, growth aher tertiary industries nd stro ng driving force supporting, impr e of large proje r oving socialje cts a nd larization servi ge e nterprice

22、 level, for industries, busi ses, but also on domestic-funded nesse s and create a good d enterprises a nd ienvir n accorr o nment for develdance with t he diropme ection nt. 3, flexibl of industrial devele investment, e opme e nhancee nt of smally. and medi In the manag um projects, proje ag ement

23、of EIA in act man, sm ccorda ncsm all project over e w ith thewhelmi i ng. Meet the area of the Cou ntys new industrial proje cts and city back i nto rural enterprises, in e, all stationed in industrial parks. M M eanwhile, strict control of excess capa a city and high energy consumpti i on, high em

24、ission enterprises to ente te r. Thirdly, increased i i ncentives on the project. Investment of the whole society, the Townshi p and County units go out and draft proje e ct. To establish investm ent incentives for successful introduction of significant project gives awards to unit s and individuals

25、, the introduction of tax for the implementation of the proje ct, to intr tr oduce organization int t o rewards. 4, preferential policies, and security industries. In terms of project examination and approval, by area Admini ni strative Committee in conjunction with the deve lopme e nt, planni ng, l

26、a a nd, industry and commerce, quality control and ot her departments, one-stop rece e ption, one-stop p service, the simplified procedures, the time limit originallBuil ding i ndustry ope ns up ne economic, graspi ng devel opmeew worl d of entre nt project is te preneurial str o hold philosophy, tu

27、ggle to build a t o extraordi t hree pr ovinces of regi onal central nary efforts to pr omoting the constrcities-in the uction of key pr Communist x countie s the six ple nary se ssion member oject s. Pl ot 108 key pr oje cts for the year, with a total is and comrades: t nvestment oda y, I was of 29

28、.3 billion yuas acommissioned n, iron plate, Jby the County party osh stone cemety Committee Standi nt waste heat di ng Committee, reports to the power ge neration and 13 e General Assembl proje cts compl eted, worship y. Considerati of 1.2 million of all members a on tons of pellets, a nd alter nat

29、es, a Hua Yu 80,000 sets a nd comrade s attendi of grandparent chickeng advi ce. A , and this year y n farming, 47 proje cts under ilai of w ork recalle d this year yilai, i n muni cipa l of right led Xia, r construction, completed i nvestment of 3.95 billion yua n, annuaCounty solidarity led County

30、 pe ople , to science l pla n of 69.3%. The first half of the Countys gross domestic development view ic w s for gui de, to g ood activitie s for mainli ne, accor product i s expe cted to rea che d 8.5 billi on yuan, ading t nd total ro a city four modernizati evenue of 943 millions three more on Yu

31、an. (B) str uctural a of development t houg ht, concentrated a djustment achieved remarka ble results. A poly for ce, w ork har A ctively transforming td, political , and economic, a he pattern of economia a mind cult ure, and social c devel opme nt, industrial nd party of constructi on are ma ecolo

32、g y, and agricultural modernia de ha a s ne w progre ss, County rendering zation and industriali zation g out w ind fresh are, a nd career prosperity, of services. Hig h x-County T in iron circular eand social settled, a conomy demnd people onstration are mind int a, and furto of good sit her expa n

33、duation. (A) facilitating the e conomic devel opmeconstruction of the nt zone Jing Dia n recyproje ct. Firmly esta blish the scratch cle economy ecology industry Park, Park, proje ct is circulareconomy and rapid economic developme ntnt. Focus more on the dialectical relationship p between developme

34、nt and environmental protection, energy saving and emission re duction projects play an important role. V igorously developing agricult ure, ecological agriculture, agriculture, modern agricultural clearing along the River Pr r omenade begi i ns to take shape. Key tourism proje cts is going well, WA

35、 Pala cece area was named top ten most influential cultural relics i n Hebei provi vi nce landscape. Develop new service s, s, and services with new developments. (C) urban-rural integration proce ss. Promoting three-y-year difference campaign, battle of two large demolition completed 32 days of 530

36、,000 square meters, exceeded the annual Tsk 7 months i i n advance. General big building jiangjun road, bri dge and highway bridges, the green heart of the city and other urban construction proje ct s, and focus on building new countryside and new housing model village e s, urban a nd rural areas im

37、prove. Highwayope ned to traffic, Li Li u Zha ng, Qing LAN high-speed x-County section completed by the end of August. Urban and rural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

38、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-

39、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沿信号通道上的各个触发器级联式传播下去。12、 IC 设计中同步复位与 异步复位的区别。（南山之桥）13、 MOORE 与 ME

40、ELEY状态机的特征。（南山之桥）14、多时域设计中 , 如何处理信号跨时域。（南山之桥）15、给了 reg 的 setup,hold 时间，求中间组合逻辑的 delay 范围。（飞利浦大唐笔试）Delay q,还有 clock的 delay, 写出决environment for development. 3, flexible investment, enhance定最大时钟的因素，同时给出表达式。（威盛VIA 2003.11.06 上海笔试试题）18、说说静态、动态时序模拟的优缺点。（威盛VIA 2003.11.06 上海笔试试题）development work steadily in

41、 the pilot counties, to bui ld peace neighborhood offices approved, change, urban and rural communities (Center), immigrant communities, pil ot projects such as integrated management of urban and rural sanitation in order. (D) maintain social harmony and stability. In the case of tight financial sit

42、uation, continue to increase the input of people, happy people battle. Urban central heating and upgrade rural power grids, rural reconstruction of shabby housing ten major projects being delivered, ha s been overfulfille d ahead. Strengthening of social programs, college entrance examination to rec

43、or d heights; new rural insura nce coverage rate of the citys first, launched in new rural cooperative medical clinic co-ordination; . Perfect Park catering, accommodation, education, re creation and other tertiary industries supporting, improving socialization service level, for industries, busines

44、se s and create a good the industr y. Constr ucti on of i ndustrial park s, just set up a platform for the development of only attract more projects i nto the distri ct, to form agglomeration adva ntages. A i nnovation proje ct. To be pur poseful, targeted i nvestment, wi ll have a basis of the Coun

45、tys industri al pa ckaged bundles, ov erall publicity a nd promotion. Initiative goi ng, pl ease come i n and carry out all-round, m ulti-lev el and wide-range of investment a ctivities. T he ow nshi p industrial projects, in principle, t o put to the West industria l parks. What t own proje ct, is

46、t hat the output value of the Tow nshi p. Se cond, w e must grasp t he standards sele cted items. Full account of extend the industry chai n and the i ntegration of factors of pr oducti on, not only efforts to intr oduce a num ber of scientific a nd te chnol ogical content and hig h added val ue, gr

47、owth a nd strong drivi ng force of large proje cts a nd large e nterpri ses, but also on domestic-funded enterpri ses a nd i n accor dance with t he dir ection of industrial devel opme nt of smalland medi In the manag um projects, proje ag ement of EIA in act man, sm ccorda ncsm all project over e w

48、 ith thewhelmi i ng. Meet the area of the Countys new industrial proje cts and city back into rural enterprises, in principle, all stationed in industrial parks. Meanwhile, strict control of excess capa a city and d high e nergy consumption, high emission enterprises to enter. Thirdly, increased inc

49、entives on the project. Investment of the whole society, the Township and County units go out and draft project. To establish investment incentives for successful introduction of significant project gives awards to unit s and individuals, the introduction of tax for the implementation of the proje c

50、t, to introduce organization into rewards. 4, preferential pol l icies, and se e curity industries. In terms of project examination and approval, by area Admini ni strative Committee in conjunction with the deve lopment, planni ng, la a nd, industry and commerce, quality control and ot her departmen

51、ts, one-stop reception, one-stop p service, the simplified procedures, the time limit originally. Buil ding i ndustry ope ns up ne economic, graspi ng devel opmeew worl d of entre nt project is te preneurial str o hold philosophy, tuggle to build a t o extraordi t hree pr ovinces of regi onal centra

52、l nary efforts to pr omoting the constrcities-in the uction of key pr Communist x countie s the six ple nary se ssion member oject s. Pl ot 108 key pr oje cts for the year, with a total is and comrades: t nvestment oda y, I was of 29.3 billion yuas acommissioned n, iron plate, J by the County party

53、J osh stone cemety Committee Standi nt waste heat di ng Committee, reports to power ge neration and 13 the General Assembl proje cts compl eted, worship y. Considerati of 1.2 million of all members a on tons of pellets, a nd alter nates, a Hua Yu 80,000 sets a nd comrade s attendi of grandparent chi

54、ckeng advi ce. A , and this year y n farming, 47 proje cts under ilai of w ork recalle r construction, comd thi s year yilai, i n muni cipa l of right led Xia, pleted i nvestment of 3.95 billion yua n, annuaCounty solidarity led County pe ople , to science l pla n of 69.3%. The first half of the Cou

55、ntys gross domestic development view ic w s for gui de, to g ood activitie s for mainli ne, accor product i s expe cted to rea che d 8.5 billi on yuan, ading t nd total ro a city four modernizati evenue of 943 millions three more on Yuan. (B) str uctural a of development t houg ht, concentrated a dj

56、ustment achieved remarka ble results. A poly for ce, w ork har A ctively transforming td, political , and economic, a he pattern of economia a mind cult ure, and social c devel opme nt, industrial nd party of constructi on are ma ecolog y, and agricultural modernia de ha a s ne w progre ss, County r

57、endering zation and industriali zation g out w ind fresh are, a nd career prosperity, of services. Hig h x-County T in iron circular eand social settled, a conomy demnd people onstration are mind int a, and furto of good sit her expa nduation. (A) facilitating the e conomic devel opmeconstruction of

58、 the nt zone Jing Dia n recyproje ct. Firmly esta blish the scratch cle economy ecology industry Park, Park, proje ct is circulareconomy and rapid economic developme ntnt. Focus more on the dialectical relationship p between developme nt and environmental protection, energy saving and emission re du

59、ction projects play an important role. V igorously developing agricultur e, ecological agriculture, agriculture, modern agricultural clearing along the River Pr r omenade begi i ns to take shape. Key tourism proje cts is going well, WA Pala cece area was named top ten most influential cultural relic

60、s i n Hebei provi vi nce landscape. Develop new service s, s, and services with new developments. (C) urban-rural integration proce ss. Promoting three-y-year difference campaign, battle of two large demolition completed 32 days of 530,000 square meters, exceeded the annual Tsk 7 months i i n advanc