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Unit 1 电子学：模拟和数字Unit 1-1第一部分：理想运算放大器和实际限制为了讨论运算放大器的理想参数，我们必须首先定义一些指标项，然后对这些指标项讲述我们所认为的理想值。
第一眼看运算放大器的性能指标表，感觉好像列出了大量的数值，有些是陌生的单位，有些是相关的，经常使那些对运放不熟悉的人感到迷惑。
对于这种情况我们的方法是花上必要的时间有系统的按照列出的次序阅读并理解每一个定义。
如果没有对每一项性能指标有一个真正的评价，设计人员必将失败。
目标是能够依据公布的数据设计电路，并确认构建的样机将具有预计的功能。
对于线性电路而言，它们与现在的复杂逻辑电路结构相比看起来较为简单，（因而在设计中）太容易忽视具体的性能参数了，而这些参数可极大地削弱预期性能。
现在让我们来看一个简单但很引人注意的例子。
考虑对于一个在50kHz频率上电压增益为10的放大器驱动10k负载时的要求。
选择一个普通的带有内部频率补偿的低价运放，它在闭环增益为10时具有所要求的带宽，并且看起来满足了价格要求。
器件连接后，发现有正确地增益。
但是它只能产生几伏的电压变化范围，然而数据却清楚地显示输出应该能驱动达到电源电压范围以内2到3伏。
设计人员忽视了最大输出电压变化范围是受频率严格限制的，而且最大低频输出变化范围大约在10 kHz受到限制。
当然，事实上这个信息也在数据表上，但是它的实用性并没有受到重视。
这种问题经常发生在那些缺乏经验的设计人员身上。
所以这个例子的寓意十分明显：在开始设计之前总要花上必要的时间来描写全部的工作要求。
关注性能指标的详情总是有益的。
建议下面列出的具体的性能指标应该考虑：1. 在温度，时间和供给电压下的闭环增益的精确性和稳定性2. 电源要求，电源和负载阻抗，功率消耗3. 输入误差电压和偏置电流，输入输出电阻，随着时间和温度的漂移4. 频率响应，相位偏移，输出变化范围，瞬态响应，电压转换速率，频率稳定性，电容性负载驱动，过载恢复5. 线性，失真和噪声6. 输入，输出或电源保护要求，输入电压范围，共模抑制7. 外部补偿调整要求不是所有的指标项都是有关的，但要记住最初就考虑它们会更好，而不要被迫返工。
电子通信专业英语答案【篇一：电子信息技术专业英语习题答案丁宁】=txt>4.(1)只要加很小的电压就能让电流流动的材料称为导体。
习题答案 exercise answerspart one electronicsunit 1 charge, current and voltage exercises1.(1)positive and negative particles(2)the time rate of change of charge(3)自由电子(4)potential difference(5)以随机的方式运动 2.(1)voltage(2)positive(3)negative(4)conductor(5)current3. (1)which ---atom(2)it---balloon(3)it---the unit of voltage, or potential difference(4)which---a wall or the ceiling(5)it---the charge of an electron is a negative one of1.60218x10-19 coulombs 4. (1)constitute(2)consists of(3)is composed of(4)makes up(5)constitute5. (1) an atom consists of a nucleus and electrons moving around it.(2)the motion of changes makes up current. (3)emf can do work on charges.unit 2semiconductor exercises1．(1)集成电路(2)半导体的导电性(3)positive type material semiconductor (4)正向偏压(5)每秒可完成上百万的简单指令操作 2．(1)---(a) (2)---(c) (3)---(b) (4)---(e) (5)---(d)3. (1)√ (2)x(3)x (4) √ (5) √（定语从句）(2)在我们所使用的所有能量中，最重要的是电能。
信息科学与电子工程专业英语第二版答案1、The house was completed five months ago. [单选题] *A. 完成(正确答案)B. 复杂C. 开始D. 装着2、We got up early this morning and took a long walk after breakfast. We walked _____ the business section of the city. [单选题] *A. amongB. betweenC. through(正确答案)D. upon3、35．Everyone in China ______ Mid-Autumn Day. [单选题] *A．likes(正确答案)B．likeC．is likingD．are like4、78．—Welcome to China. I hope you'll enjoy the ________.—Thank you. [单选题] * A．tour(正确答案)B．sizeC．nameD．colour5、Once you get on the road, here are some traffic _______ to remember. [单选题] *A. problemsB. positionsC. rules(正确答案)D. points6、I walked too much yesterday and （）are still aching now. [单选题] *A. my leg's musclesB. my leg muscles(正确答案)C. my muscles' of legD. my legs' muscles7、Will you please say it again? I _______ you. [单选题] *A. didn’t hear(正确答案)B. don’t heardC. didn’t heardD. don’t hear8、He _______ walks to school, because he lives near school. [单选题] *A. sometimes(正确答案)B. neverC. doesn’tD. don’t9、I’m still unable to make myself_____in the discussion, which worries me a lot. [单选题]*A.understandB.understood(正确答案)C.understandingD.to be understood10、73．The moonlight goes ____ the window and makes the room bright. [单选题] * A．acrossB．through(正确答案)C．overD．in11、You have coughed for several days, Bill. Stop smoking, _______ you’ll get better soon. [单选题] *A. butB. afterC. orD. and(正确答案)12、Mary, together with her children ,_____ some video show when I went into the sitting room. [单选题] *A. were watchingB. was watching(正确答案)C. is watchingD. are watching13、Generally speaking, it is _______ to ask a woman’s age in western countries. [单选题] *A. possibleB. importantC. not polite(正确答案)D. polite14、He was born in Canada, but he has made China his _______. [单选题] *A. familyB. addressC. houseD. home(正确答案)15、I knocked on the door but _______ answered. [单选题] *A. somebodyB. anybodyC. nobody(正确答案)D. everybody16、The manager isn’t in at the moment. May I _______ a message? [单选题] *A. take(正确答案)B. makeC. haveD. keep17、—What ______ your sister ______ this Saturday?—Something special, because it’s her birthday. （）[单选题] *A. are; going to doB. is; going to do(正确答案)C. does; doD. did do18、I _______ the job because I couldn’t stand(忍受) the rules. [单选题] *A. gave inB. gave outC. gave backD. gave up(正确答案)19、?I am good at schoolwork. I often help my classmates _______ English. [单选题] *A. atB. toC. inD. with(正确答案)20、People cut down many trees ______ elephants are losing their homes. （）[单选题] *A. ifB. butC. so(正确答案)D. or21、Do not _______ me to help you unless you work harder. [单选题] *A. expect(正确答案)B. hopeC. dependD. think22、12．That is a good way ________ him ________ English. [单选题] *A．to help；forB．helps；withC．to help；with(正确答案)D．helping；in23、( ) She keeps on learning English all the time. So far, she______three books of New Concept English. [单选题] *A. has learned(正确答案)B. have learnedC. had learnedD. learn24、11．No one ________ on the island(岛). [单选题] *A．liveB．lives(正确答案)C．livingD．are living25、If you do the same thing for a long time, you'll be tired of it. [单选题] *A. 试图B. 努力C. 厌倦(正确答案)D. 熟练26、68．—How ________ apples do you want?—I want two kilos. How ________ are they?—They are 5 yuan. [单选题] *A．much; manyB．many; much(正确答案)C．many; manyD．much; much27、Modern plastics can（）very high and very low temperatures. [单选题] *A. stand(正确答案)B. sustainC. carryD. support28、“I think you are wonderful,”she said, “You are so patient with your little George.”[单选题] *A. 耐心(正确答案)B. 细心C. 关心D. 偏心29、Then the speaker _____the various factors leading to the economic crisis. [单选题] *A.went onB.went afterC.went into(正确答案)D.went for30、71．How beautiful the shoes look! Can I________？[单选题] *A．try it onB．try on itC．try them on(正确答案) D．try on them。
第一单元元件及定律A．课文译文电阻器、电容器和电感器在电子电路中，电阻器、电容器和电感器是非常重要的元件。
电阻器和电阻电阻器是二端口元件。
电阻是阻止电流流动，更确切地说，是阻止电荷流动的能力。
在国际单位制中，电阻用欧姆来度量。
希腊字母Ω是欧姆的标准符号。
较大的电阻一般用千欧和兆欧来表示。
模拟这种特性常用的电路元件是电阻器。
图1.1表示电阻器的电路符号，R表示电阻器的电阻值。
图1.1 电阻器的电路符号为了进行电路分析，我们必须在电阻器中指明电流和电压的参考方向。
如果我们选择关联参考方向，那么电压和电流之间的关系是：v=iR (1.1)这里v是电压，其单位是伏特， i是电流，其单位是安培，R是电阻，其单位是欧姆。
如果选择非关联参考方向，我们必须写成：v=－iR (1.2)用在公式（1.1）和（1.2）中的代数式就是著名的欧姆定律。
欧姆定律表示了电压作为电流的函数。
然而，要表示电流是电压的函数也是非常方便的。
欧姆定律是电阻两端的电压和电流间的代数关系。
电容器和电容电能可以存储在电场中，存储电能的装置叫电容器。
电容器存储电能的能力叫做电容。
图1.2表示电容器的电路符号。
电容的电路参数用字母C 表示，用法拉来度量。
因为法拉是相当大的电容量，实际上电容值通常位于皮法和微法之间。
图1.2 电容器的电路符号当电压随时间变化时，电荷的位移也随时间变化，引起了众所周知的位移电流。
在终端，位移电流和传导电流没有区别。
当电流参考方向和电压参考方向是关联参考方向时，电流正比于电容两端电压随时间的变化率的数学表达式为： dt dv Ci (1.3)这里 i 的单位是安培，C 的单位是法拉，v 的单位是伏特， t 的单位是秒。
电感器和电感众所周知，电感是电子电路中的模块之一。
所有的线圈都有电感。
电感是抵抗流过线圈电流的任何变化的性质。
电感用字母L 表示，其单位是亨利。
图1.3表示一个电感器。
图1.3 电感器的电路符号当电流和电压的参考方向关联时，有 dtdi Lv (1.4)这里v 的单位是伏特，L 的单位是亨利，i 的单位是安培，t 的单位是秒。
电子信息技术专业英语习题答案电子信息技术专业英语第2版习题答案Exercise AnswersPart one ElectronicsUnit 1 Electronic ComponentsExercises1.(1)the simplest components in any circuit(2)converting electrical energy into heat.(3)仅沿单向流动(4)on or off switch(5)称为电绝缘的绝缘材料2. (1)current(2)circuit(3)charge(4)conductors(5)Transistors3. (1)which ---atoms(2)it---balloon(3)it---The unit of voltage, or potential difference(4)which---a wall or the ceiling(5)it---the charge of an electron is a negative one of 1.60218x10-19 coulombs4. (1)constitute(2)consists of(3)is composed of(4)makes up(5)constitute5. (1) Resistors can reduce the flow of current.(2) Capacitors consist of two pieces of conducting materials separated by a non-conducting material called a dielectric.(3)The function of a transistor is similar to a switch.Unit 2 SemiconductorExercises1．(1)集成电路(2)半导体的导电性(3)positive type material semiconductor(4)forward bias(5)每秒可完成上百万的简单指令操作2．(1)---(a)(2)---(c)(3)---(b)(4)---(e)(5)---(d)3. (1)√(2)x (3)x (4)√ (5) √4.(1)只要加很小的电压就能让电流流动的材料称为导体。
Unit 1 电子学：模拟和数字Unit 1-1第一部分：理想运算放大器和实际限制为了讨论运算放大器的理想参数，我们必须首先定义一些指标项，然后对这些指标项讲述我们所认为的理想值。
第一眼看运算放大器的性能指标表，感觉好像列出了大量的数值，有些是陌生的单位，有些是相关的，经常使那些对运放不熟悉的人感到迷惑。
对于这种情况我们的方法是花上必要的时间有系统的按照列出的次序阅读并理解每一个定义。
如果没有对每一项性能指标有一个真正的评价，设计人员必将失败。
目标是能够依据公布的数据设计电路，并确认构建的样机将具有预计的功能。
对于线性电路而言，它们与现在的复杂逻辑电路结构相比看起来较为简单，（因而在设计中）太容易忽视具体的性能参数了，而这些参数可极大地削弱预期性能。
现在让我们来看一个简单但很引人注意的例子。
考虑对于一个在50kHz频率上电压增益为10的放大器驱动10kΩ负载时的要求。
选择一个普通的带有内部频率补偿的低价运放，它在闭环增益为10时具有所要求的带宽，并且看起来满足了价格要求。
器件连接后，发现有正确地增益。
但是它只能产生几伏的电压变化范围，然而数据却清楚地显示输出应该能驱动达到电源电压范围以内2到3伏。
设计人员忽视了最大输出电压变化范围是受频率严格限制的，而且最大低频输出变化范围大约在10 kHz受到限制。
当然，事实上这个信息也在数据表上，但是它的实用性并没有受到重视。
这种问题经常发生在那些缺乏经验的设计人员身上。
所以这个例子的寓意十分明显：在开始设计之前总要花上必要的时间来描写全部的工作要求。
关注性能指标的详情总是有益的。
建议下面列出的具体的性能指标应该考虑：1. 在温度，时间和供给电压下的闭环增益的精确性和稳定性2. 电源要求，电源和负载阻抗，功率消耗3. 输入误差电压和偏置电流，输入输出电阻，随着时间和温度的漂移4. 频率响应，相位偏移，输出变化范围，瞬态响应，电压转换速率，频率稳定性，电容性负载驱动，过载恢复5. 线性，失真和噪声6. 输入，输出或电源保护要求，输入电压范围，共模抑制7. 外部补偿调整要求不是所有的指标项都是有关的，但要记住最初就考虑它们会更好，而不要被迫返工。
电子信息工程专业英语Part 1第一课关于电子技术一、课文习题参考答案Ⅰ. （1）alternating current circuits （2）semiconductor diodes（3）passive component（4）the combinatory logic electric circuit（5）rectification（6）Laplace transform（7）inductor（8）Fourier series and Fourier transformⅡ.（1）控制理论（2）场效应管三极管（3）布尔代数（4）稳压（5）相关性和功率谱密度（6）滤波器类型（7）模/数转换器（8）时序逻辑电路的分析与综合Ⅲ.(1)Electronics is a part of the larger field of electricity. The basic principles of electricity are also common to electronics. Modern advances in the field of computer, control system, communications have a close relationship with electronics. The field of electronics includes the electron tube, transistor, integrated circuit and so on.(2) Direct current circuits & Alternating current circuits,Analog electronics,Digital electronics,signal and systems,Circuit theory and design, Control theory, Microcontroller systems,Computer programming for engineering applications.(3) This curriculum mainly introduces the characteristics of semiconductor devices in linear application scope.The content involved in semiconductor diodes (PN junction diodes, special purpose diodes), transistors (field effects and bipolar transistors), signal amplifiers, practical amplifiers, biasing circuits, operational amplifiers circuit and other circuits (rectification, regulation and DC power supplies).(4) This partial studies take the basic electric circuit theory and the operational amplifier knowledge as the foundation. The main study goal is to enhance understanding of the electric circuit theory. Its main content includes the elementary theory in circuit theory (network functions, characteristic frequencies), types of filter (lowpass,bandpass), review of operational amplifiers (design of first and second order using operational amplifiers, cascade design), filter characteristics(Butterworth, Chebyshev, frequency transformations in design, sensitivity design of passive LC ladder filters and a brief introduction to switched capacitor filters).(5) Perfect.二、参考译文电子学的发展电子学是电学的一部分。
作业一：翻译：Lesson1 Contents of Electronics Course要求：每个人必须做，写在纸上，注明姓名、班级、学号。
十一之后交。
作业二：分组翻译：每组发一篇文章，每篇文章分几部分，结构类似。
要求翻译：abstract （摘要），introduction(引言)，conclusion(总结)，其中引言和总结指的是每篇文章正文的第一部分和最后部分。
每组交一篇，建议每组选一名组长，由组长具体分配任务。
交作业时注明组长及每组成员姓名。
翻译的题目要同时注明英文和中文。
每班分6篇，这里一共12篇。
3班做1-6组，4班做7-12组。
电子信息工程专业英语Part 1第一课关于电子技术一、课文习题参考答案Ⅰ. （1）alternating current circuits （2）semiconductor diodes（3）passive component（4）the combinatory logic electric circuit（5）rectification（6）Laplace transform（7）inductor（8）Fourier series and Fourier transformⅡ.（1）控制理论（2）场效应管三极管（3）布尔代数（4）稳压（5）相关性和功率谱密度（6）滤波器类型（7）模/数转换器（8）时序逻辑电路的分析与综合Ⅲ.(1)Electronics is a part of the larger field of electricity. The basic principles of electricity are also common to electronics. Modern advances in the field of computer, control system, communications have a close relationship with electronics. The field of electronics includes the electron tube, transistor, integrated circuit and so on.(2) Direct current circuits & Alternating current circuits,Analog electronics,Digital electronics,signal and systems,Circuit theory and design, Control theory, Microcontroller systems,Computer programming for engineering applications.(3) This curriculum mainly introduces the characteristics of semiconductor devices in linear application scope.The content involved in semiconductor diodes (PN junction diodes, special purpose diodes), transistors (field effects and bipolar transistors), signal amplifiers, practical amplifiers, biasing circuits, operational amplifiers circuit and other circuits (rectification, regulation and DC power supplies).(4) This partial studies take the basic electric circuit theory and the operational amplifier knowledge as the foundation. The main study goal is to enhance understanding of the electric circuit theory. Its main content includes the elementary theory in circuit theory (network functions, characteristic frequencies), types of filter (lowpass,bandpass), review of operational amplifiers (design of first and second order using operational amplifiers, cascade design), filtercharacteristics(Butterworth, Chebyshev, frequency transformations in design, sensitivity design of passive LC ladder filters and a brief introduction to switched capacitor filters).(5) Perfect.二、参考译文电子学的发展电子学是电学的一部分。
科技英语课件 ExercisesUnit 1 Exercises(1) Translate the following sentences into Chinese.1. As with series resonance, the greater the resistance in thecircuit the lower the Q and, accordingly, the flatter and broader the resonance curve of either line current or circuit impedance.对于串联谐振，电路中的电阻愈大Q值就愈低，相应地线路电流或电路阻抗的谐振曲线也就愈平、愈宽。
2. A wire carrying a current looks exactly the same andweighs exactly the same as it does when it is not carrying a current.一根带电的导线其外表与重量都与不带电导线完全一样。
3. Click mouse on the waveform and drag it to change thepulse repetition rate, or directly enter a new value ofthe period in the provided dialogue box, while keeping the pulse width unchanged.在波形上点击鼠标并拖动来改变脉冲重复频率，或者在提供的对话框中直接输入新的周期值，而保持脉冲宽度HMILYYLIMH 1不变。
4. Electronics is the science and the technology of thepassage of charged particles in a gas, in a vacuum, or in a semiconductor. Please note that particle motion confined within a metal only is not considered electronics.电子学是一门有关带电粒子在气体、真空或半导体中运动的科学技术。
科技英语课件 ExercisesUnit 1 Exercises(1) Translate the following sentences into Chinese.1. As with series resonance, the greater the resistance in thecircuit the lower the Q and, accordingly, the flatter and broader the resonance curve of either line current or circuit impedance.对于串联谐振，电路中的电阻愈大Q值就愈低，相应地线路电流或电路阻抗的谐振曲线也就愈平、愈宽。
2. A wire carrying a current looks exactly the same andweighs exactly the same as it does when it is not carrying a current.一根带电的导线其外表与重量都与不带电导线完全一样。
3. Click mouse on the waveform and drag it to change thepulse repetition rate, or directly enter a new value of the period in the provided dialogue box, while keeping the pulse width unchanged.在波形上点击鼠标并拖动来改变脉冲重复频率，或者在提供的对话框中直接输入新的周期值，而保持脉冲宽度HMILYYLIMH 1不变。
4. Electronics is the science and the technology of thepassage of charged particles in a gas, in a vacuum, or in a semiconductor. Please note that particle motion confined within a metal only is not considered electronics.电子学是一门有关带电粒子在气体、真空或半导体中运动的科学技术。
注意，在本书中粒子运动仅限于金属的情况不属于电子学。
5. Hardware technologies have played vital roles in ourability to use electronic properties to process information, but software and data processing aspects have not developed at the same speed.硬件技术在我们使用电子特性来处理信息的能力中一直起着重要作用，而软件及数字处理方面却没能与硬件同步发展。
6. However, in a properly designed DC amplifier the effect oftransistor parameter variation, other than Ico, may be practically eliminated if the operation point of each stage is adjusted so that it remains in the linear operation range HMILYYLIMH 2of the transistor as temperature varies.然而在设计得当的直流放大器中，若调节每一级的工作点使之在温度变化时保持在晶体管线性区，就能在实际上消除Ico以外的晶体管参数变化所造成的影响。
(2) Fill in the blanks with the most appropriate choice.1. A message signal can any amplitude valuebetween 0 and A volts.B. useC. receiveD. accept2. Each time a positive clock edge occurs, the flip-flopchanges state, leading to half as many pulses at the output to the clock input.A. asC. dueD. so as3. In the previous section we discussed sine-wave or CWmodulation systems in which the modulating signal_______ of a digital pulse train.got4. In this book we shall emphasize the limitations imposedon the information transmitted by the system throughwhich it was _______ and shall attempt some comparisonHMILYYLIMH 3 A. madeC. containedD.of different systems.A. putB. traveledD. viewed5. This signal either does not change, or it changes ______by an amount equivalent to one or more quantum steps.A. interruptedlyB. rudelyabsolutely6. We shall only be _______ with logical representations, notabsolute values(3) Choose the phrase that is closest in meaning to the underlined part.1. It is all too easy with linear circuits, which appearrelatively simple when compared with today’s complex logic arrangements, to ignore detailed performance parameters A. which has bad influence upon the system performanceB. which is important to ensure circuit linearityC. which is possible to enhance the system performanceHMILYYLIMH 4 A. interested B. caring C. referredD. which is crucial for maintaining the desiredperformance2. Therefore there will be a slight time delay, due to thepropagation delay of the flip-flops between the time one flip-flop changes state and the time the next one changes and these counters are therefore called ripple counters. A. the state change is propagated through the counter likeripplesB. the state changes cause ripples in the counterC. passing through the counter, the state ripple changesD. the state of the counter changes due to ripples3. Instead of triggering on each pulse, a phase lock techniquethat the average phase discrepancy is small. A. checks each oscillator for many sync pulsesB. checks the phase relationship between individualoscillators and a collection of sync pulsesC. looks at the relations between the phase and the syncpulsesD. examines whether the phase is relative to the oscillatorHMILYYLIMH 5and the sync pulses4. between the applied electrical pulse and the resulting optical output pulse is minimized; this delay must indeed not be more than the bit interval so that the optical pulse can accurately reproduce the input signal.A. ensuring that the system is off the threshold by a small marginB. maintaining the system’s shut-down state somewhatbelow a prescribed levelC. making sure the system is below its threshold so that thestate is kept offD. keeping the system in a shut-down state that is under agiven level with a tiny tolerance5. If the original signal is well behaved, and that information can be obtained by averaging for a long period of time, thereby eliminating noise that could be very large.A. the LO will not require any information in order to keeptrackingB. the LO will make use of tracking information that isHMILYYLIMH 6scarce in the system C. the LO will require some information, but not much, sothat the system can trackD. the LO will use no information other than some littleone to maintain tracking6. The third section describes quantization schemes that A. take measure of the speech characteristicsB. take the speech characteristics into considerationC. count the speech characteristicsD. make use of the speech characteristics7. may be practically eliminated if the operating point of each stage is adjusted so that it remains in the linear operation range of the transistor as temperature varies.A. the effective variation of the transistor parametersB. the effort to change transistor parametersC. the transistor parameters that effectively change8. Stability and repeatability are fundamental attributes ofdigital circuits, however, and the necessary accuracy can HMILYYLIMH 7be obtained in a digital version of the modulator A. by expressing the signals with a suitable word lengthB. by using a word long enough to describe the signalsC. by choose to characterize the signals in terms of wordlength appropriatelyD. by appropriately representing the signals to choose a length of words。
