电子信息专业英语复习资料

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电子信息类专业英语Unit 15 Data Communications-文档资料

Unit 15 Data Communications
Unit 15 Data Communications
Passage A Data Communications Passage B Characteristics of Communication Channels Passage C Communication Equipment and Software
Unit 15 Data Communications
Initially, both the airline and banking operations can be established on a private basis, which would minimize the need for switching operations. But in both cases, the need to expand beyond private operations soon arises. In the case of the airlines, the need arises to access the facilities of other airlines; and in the case of the banks, certain common data facilities may be shared with other banks. Even though private networks may suffice for many services, the need to provide data communications between urban centers leads to regional and national networks. In the U.S., the Bell System, the independent telephone companies and specialized data communication networks are involved as carriers of such data.

电子信息类专业英语(西电第二版)Unit 4 Microel

Unit 4 Microelectronics
Integrated circuits are small, light, rugged, and reliable. They require less power and lower voltages than equivalent macroscopic circuits; consequently they operate at lower temperatures, and individual components may be close together without exceeding the operating temperature limit. Relatively little stray capacitance and short time delays are produced because of the short interconnections between the individual components in IC. Maintenance is simplified because if a component of the IC fails the complete IC is usually replaced. Mass production techniques of plane technology have reduced the cost of many IC so that they are almost as inexpensive as a single transistor. Eventually most conventional circuits will be replaced by IC.
［2］ The reduction in power dissipation is particularly important where a complex circuit is to be concentrated into a small space. The problem of extracting the heat generated in the circuit may then be a difficult one.

电子信息类专业英语 unit 4 Microelectronics

physicist J. Ambrose Fleming, allowing the change of alternating current into a direct one-way signal.（二极管） ❖ 1906: First electronic triode vacuum tube is built by American electrical engineer Lee De Forest, allowing signals to be controlled and amplified. Technology of electronics is born. （三极管） ❖ Late 1940‘s: The Transistor.（晶体管） ❖ 1947: The point-contact bipolar transistor is invented by Bell Lab‘s Bardeen, Shockley, and Brattain.（点接触双极晶体管） ❖ 1951: Junction field-effect transistor (JFET) is invented.（结型场效应管） ❖ 1952: Single-crystal silicon is fabricated.（单晶硅） ❖ 1954: Oxide masking process is developed.（氧化模处理）
❖ 微型化是指减少元件和电路的几何尺寸, 从而增加封装密度、降低功耗、减少信号传播延迟。
❖ The integrated circuit is a group of transistors manufactured from a single piece of material and connected together internally, without extra wiring . Integrated circuits are also called ICs or chips.

电子信息类专业英语unit 11 Database

由于存取实际数据的责任由数据库系统承担，因此程序员就可以不考虑实际的数据结构。
·rest with意思为“取决于，属于…的权限”，它在由since引导的原因状语从句中作谓语。
［3］ A non-management employee would probably have no access privileges to the payroll data and could neither inquire about nor change the data.
• The portion of a playing field having specific dimensions on which the action of a game takes place. 比赛场地
2023/3/13
《电子信息工程专业英语教程》
15
Field in dictionary
Unit 11 Database 数据库（p137）
Passage A Database: A Better Way to Manage and Organize Data
Passage B DBMS and Data Independence, Integrity,Security
Passage C Database System and Three Data Models
2023/3/13
《电子信息工程专业英语教程》
21
Approach in text
In a traditional approach using COBOL programs, each individual COBOL application program that used that particular field would have to be changed, recompiled, and retested. COBOL语言编程的习惯方法是：每个独立的使用了这种字段的COBOL应用程序都要修改、重新编译并检测。来自field in text

电子信息专业英语要点总结

重点词汇1.TDM——Time Division Multiplexing 时分复用FDM CDM2.PCM——Pulse Code Modulation 脉冲编码调制3.PCI——Peripheral Component Interconnect 周边元件连接口4.IDE——Integrated Drive Electronics 集成驱动器电路5.AGP——Accelerated Graphic Port 加速图形接口B——Universal Serial Bus通用串行接口7.HDL——Hardware Description Language 硬件描述语言8.PLD——Programmable Logic Device 可编程逻辑器件9.FPGA——Field Programmable Gate Array 现场可编程门阵列10.ASIC——Application—Specific Integrated Circuit专用集成电路11.DSP——Digital Signal Processor 数字信号处理器12.SoC——System-on-Chip 片上系统13.Learnning curve 学习曲线14.IEEE——Institute of Electrical and Electrics Engineers电气与电子工程师学会15.sample and hold circuit 采样与保持电路16.price/performance ratio 性能价格比17.harvard architecture 哈佛结构18.looping scheme 循环机制19.FFT——Fast Fourier transform 快速傅里叶变换20.PCB——Printed Circuit Board 印刷电路板21.SPS——Sample Per Second 每秒样本数22.block diagram 方框图23.Dolby Stereo 杜比立体声24.transmission bandwidth 传输带宽25.signal-to-noise ratio 信噪比汉译英句子1."信道"这个术语通常是指频分多址系统中的一个频率，时分多址系统中的一个时隙，码分多址系统中的一个代码或混合系统中的频率，时隙，代码中的某中组合。

电子信息专业英语——13+unit+6+Electronic+Communication

Unit 6 Electronic Communications
4. Bandwidth and Information Capacity The two most significant limitations on the performance of a communications system are noise and bandwidth.
带宽与信息容量
Unit 6 Electronic Communications
In recent years, transistors and linear integrated circuits have simplified the design of electronic communications circuits, thus allowing for miniaturization, improved performance and reliability, and reduced overall costs.
(13) 国际电信联盟
(14)
(15)
Unit 6 Electronic Communications
3. Answer the following questions. (1) When and by whom was the first electronic communications system developed? (2) What is the first amplifying device for electrical signals? (3) What systems are included in modern electronic communications systems? (4) What’s the difference between analog signal, discrete signal and digital signal? (5) Could you state Hartley’s law and Shannon’s formula?

(完整版)电子信息专业英语复习资料

电子信息专业英语复习资料一、基本术语（英译汉）1.probe探针2.real time operational system 实时操作系统3.debugger 调试器4.sourse code 源代码5.software radio wireless LAN 软件无线电网络6.base station 基站7.top-down approach 自顶向下分析法8.variable 变量9.data compress 数据压缩10.signal conditioning circuit 信号调理电路11.Chebyshev Type Ⅰfilter 切比雪夫Ⅰ型滤波器12.vertical resolution 垂直分辨率13.device driver 设备驱动piler 编译器15.template 模板16.concurrent process 并发进程17.object recognition 目标识别18.Discrete Time Fourier Transform 离散傅立叶变换bined circuit 组合逻辑电路20.impedance transform 阻抗变换器21.voltage source 电压源22.passive component 无源器件23.quality factor 品质因数24.unit-impulse response 单位脉冲响应25.noise origin 噪声源26.Domino effect 多米诺效应27.output load 输出负载28.cordless phone 无绳电话29.Antenna 天线30.harmonic interference 谐波干涉31.Parallel Resonant 并联谐振32.voltage control oscillator 压控振荡器33.adaptive delta modulation 自适应增量调制34.amplitude modulation 调幅二、缩略语（写出全称）1.LSI：large scale integration2.PMOS：p-type metal-oxide semiconductor3.CT：cycle threshold4.MRI：magnetic resonance imaging5.ROM：read-only memory6.DRAM：dynamic random access memory7.TCXO：temperature compensated X'tal (crystal) OscillatorB：Universal Serial Bus9.DCT：discrete cosine transform10.DC：direct current11.CD：Compact Disc12.ASIC：application-specific integrated circuit13.MPEG：Moving Picture Experts Group14.ASSP：application-specific standard product15.EEPROM：electrically erasable programmable read-only memory16.GBW：gain band width17.PLD：programmable-logic device18.RTL：resistor transistor logic19.IP：intellectual property20.FPGA：field-programmable gate array21.CAD：computer-aided design22.MAC：multiply-accmulate23.GSM：Global System for Mobile communications24.CDMA：code division multiple access25.EDA：electronic-design automation26.HDL：hardware-description language27.OS：operating system28.PCB：printed-circuit board29.CMOS：complementary metal-oxide semiconductor30.AC：alternating current31.SRAM：static random-access memory32.PLL：phase-locked loop三、翻译（英译汉+汉译英）1.Bode presented a log technique that transformed the intensely mathematical process of calculating a feedback system's stability into graphical analysis that was simple and perceptive.伯德采用的是一种对数方法——将分析反馈系统稳定性的数学过程转换为简单又好理解的图形化分析。

电子信息专业英语复习题

1)As the voltage varies with time, the displacement of charge also varies with time, causing what is known as the displacement current. 当电压随时间的变化、位移电荷也随时间的变化而变化,造成所谓的位移电流。

2）The device capable of doing this is called a capacitor. The ability of a capacitor to store electrical energy is termed capacitance.该装置能做这项被称为电容。

电容器的能力储存电能被称为电容。

3）Resistance is the capacity of materials to impede the flow of current or, more specifically, the flow of electric charge.电阻是材料的能力来阻碍电流的流动,或者更确切地说,电荷的流动。

4）Second, a current cannot change instantaneously in an inductor, that is, the current cannot change by a finite amount in zero time.第二,电流不能改变瞬间在一个电感,也就是说,当前无法改变由有限零时间。

5）Inductance is the property of oppsing any change of a current flowing through a coil.电感的属性相对任何一个线圈通过电流的变化。

Oppsing:adj. 反对的；相对的；对面的| v. 反对6. Note from Eq(1.4) that the voltage across the terminals of an inductor is proportional to the time rate of change of the current inthe inductor.注意从式(1.4)的电压,一个电感的连接端子是成正比的变率的电感电流。

电子信息专业英语.ppt

Unit5 Digital modulation
Unit11 Optical Fiber
Unit6 Digital Signal Processing
Communication
Unit 7 ISDN
12 Modern Switching
Technique
Unit 1 科技英语基础知识
1.1 科技英语的特点
anode 阳极
cathode 阴极
Ohm’s law
欧姆定律
amplifier
放大器
microprocessor 微处理器
impedance
阻抗
electromagnetic wave 电磁波
resonant frequency 共振频率
phase-shift keying(PSK) 相移键控
modem 调制解调器 codec 编解码器
可将其分解为： beam sweeps each line. then flies back to scan another line. it is desired to break picture into lines in desired sequence.
例2.The technical possibilities could well exist, therefore, of nation-wide integrated transmission network of high capacity, controlled by computers, interconnected globally by satellite and submarine cable, providing speedy and reliable communications throughout the world.

电子信息专业英语(第二版)课件：科技英语基础知识(二)

dis- 不, 除: disadvantage
jet:
jet plane
喷气式飞机
plant:
power plant
电厂
driver:
screw driver
螺丝刀
科技英语基础知识(二)
2) 合成法
有不少英语单词里由两个或三个以上单词组成, 有直接
结合和连符结合两种方式。
(1) 直接结合。
① 结合成名词。例如：
n.+n. textbook
教科书
科技英语基础知识(二)
(2) The switching time of the new type transistor is shortened by a factor of three.
译文1: 新型晶体管的开关时间缩短了2/3。译文2: 新型晶体管的开关时间缩短为1/3。为避免引起歧义, 关于减小的翻译最好不译成减小多少倍, 而译成分数或百分数。按减小净量来翻译, 则遵循(n-1)/n 的规则(如译文1)。若按减小后的余量翻译, 则为1/n(如译文2)。
科技英语基础知识(二)
(3) The cost of TV sets was reduced by 70％. 电视机的成本降低了70％。 (4) We have radio experiments every three weeks. 我们每三周(每隔二周)做一次无线电实验。 every按“每隔”来翻译时, 须遵循(n-1)规则。
昼夜(服务) 难通行的(路) 过时的中小型往复(运动) 上下行(交通)
科技英语基础知识(二)
3) 加缀法
一般, 前缀并不改变词的词类, 但赋予词以新的含义, 因
为前缀本身是有含义的; 而后缀一般不改变词的基本含义, 但

电子信息类专业英语第1章

Unit 1 Current, Voltage and Resistance
We shall define voltage “across” an element as the work
done in moving a unit charge (+1C) through the element from one terminal to the other. The term voltage (represented by the letter symbol U) is commonly used to indicate both a potential difference and an electromotive force. The unit in which voltage is measured is the volt(V). One volt is defined as that magnitude of electromotive force required cause a current of one ampere to pass through a conductor having a resistance of one ohm. Besides the volt, smaller or larger magnitude of voltage are expressed in millivolts(mV), microvolts(μV) or kilovolts(kV).
Unit 1 Current, Voltage and Resistance
Resistors restrict the flow of electric current, for example, a

电子信息类专业英语(第二版)

第三单元电子技术B篇二进制和逻辑系统1.二进制一个数字系统作用于二进制方式下。

期间运行时只存在于两个可能的状态。

晶体管允许工作在截止区或饱和区，不工作于放大区。

一个节点可能处于高电平即3~5V，或低电平即0~0.4V，其他值不被允许。

不同的结果都被表示成这两种量化方式，最常用的方式如表3.1所列。

在逻辑系统中，一个语句被判定是为真还是为假，这是二进制最初的表示方式。

处在符号9下的开关可能是打开或是关闭等等。

当涉及到两种符号0和1时，二进制算法和精确的开关操作或者逻辑作用是最好的处理分类的方式。

代表数字的二进制将参照熟悉的十进制来解释。

后者的基数是十，十个数字分别是0,1,2,3,4,5,6,7,8,9,用来表示任意数字。

为了表示大于9的数，我们要对数字排列中的每一个数字所处的位置赋予涵义。

例如，1264意味着1264=1*103+2*102+6*101+4*100因此，单个数字在一个数字代表系数扩大权力的数量在10.最远的右边的数字是0次幂的系数,下一个是1次幂的系数，如此等。

二进制中基数是2，只有用0和1来代表一个数。

而0和1在十进制中代表相同的涵义，只是每个数字因所处位置不同而给与不同的解释。

在二进制中各个数字代表二次幂的系数而不是十进制中的基数10.如：十进制数19写成二进制数就是10011，因为10011=1*24+0*23+0*22+1*21+1*20=16+0+0+2+1=19表3.2列出了十进制与二进制之间的转换。

表3.3描述了一种方法，如何将十进制转换为二进制。

步骤如下：将十进制数（假设是19）放在最右边，然后将它除以2后得到的商（9）放在十进制数左边，将余数（1）写在商的下边。

重复这个步骤（即9/2=4余数为1）直到商为0.第二行得到的1和0的数组就是十进制数的二进制表示。

例子中十进制数19就是二进制数10011.一个二进制数（0或1）称为比特.一组相同表示形式的位称为字节，字或者码。

电子信息科学与技术专业英语考点

1.The basic two in any circuit are the power supply and the load.电路中最基本的两个要素是电源和负载。

2.Filters have two uses: signal separation and signal restoration.滤波器有两个用途：信号分离和信号复原。

3.Digital image processing is the manipulation of image by computer.数字图像处理是指利用计算机技术处理图像。

4.Image processing operations can be roughly divided into two major categories, image compression, and image restoration. 图像处理大致分为两类：图像压缩和图像恢复。

5.Fiber-optic communication systems are lightwave systems that employ optical fibers for information transmission. 光纤通信系统是光波系统，利用光纤完成信息传输。

6.Capacitors are designed for storing electrical charge. They usually consist of two metal plates separated by a nonconductive material called a dielectric. 设计电容的目的是用其存储电能。

电容一般由两块分离的金属板和板间介质构成。

7.These circuits are the common-emitter, emitter-follower, and common-base configurations. 这种电路是共射极、射极输出器和共基极。

电子信息专业英语——8+9+Unit+5+Electrical+Technique

which causes the op-amp’s output to center at zero volts. The
output stage takes the form of a complementary emitter
follower, and provides a low-impedance output. 差动放大级的输出通过一个失调补偿网络与输出级相连,
❖Resistance 电阻
❖Current 电流
❖Voltage 电压
Hale Waihona Puke ❖ Circuit电路
❖ Load
负载
❖Material 材料物质
❖ Electronic
❖Electrical insulators
❖Electrical current 电流
Unit 3 Electrical Technique
❖Zener Diode：A special diode which is used to maintain a fixed voltage across its terminals.
Unit 3 Electrical Technique
Resistors，Diode，Transistor
❖Photodiode：A light-sensitive diode
precautions ：静电防护
❖ 静电防护措施：本工序防静电措施 ❖ 的目的在于将包括人体在内的作业场所处于同等
电位，具体方法如下： 1、将1兆欧的电阻连通后再接地，并佩戴防静电手
腕带操作; 2、将测试仪、工具、烙铁等接地; 3、工作台面铺设防静电台垫后接地; 4、操作人员穿戴防静电工衣、工鞋; 5、地面铺设防静电地板或导电橡胶地垫; 6、IC运输、包装过程中应保持同电Un位it 3。Electrica下l T一ec页hniqu返e 回

电子信息类专业英语Unit 7 Electronic Instrument Introduction-精选文档

Unit 7 Electronic Instrument Introduction
3. Function Signal Generator
Take the EE1641B Model function signal generator as an example. The signal generator is a versatile signal source that can be used in a variety of engineering, industrial, educational and hobbyist applications. This generator provides the following types of waveform for output: (1) Sine; (2) Square; (3) Triangle.
Unit 7 Electronic Instrument Introduction
Unit 7 Electronic Instrument Introduction
Text Key words Technical terms
Expressions
Notes to the text
Unit 7 Electronic Instrument Introduction
Unit 7 Electronic Instrument Introduction
When the signals being measured contain significant harmonics,
the calibrations are inaccurate. With the oscilloscope, the voltage is measured from the displayed wave, which includes any harmonic content. The only major disadvantage of using an oscilloscope for voltage (or current) measurement is the problem of resolution. The scales of simple inexpensive VOMs or electronic voltmeters are easier to read than an oscilloscope. In most cases, the oscilloscope’s vertical scales are used for voltage (or current) measurements, with each scale division representing a given value of voltage (or current). When voltages are large, it is

电子信息技术专业英语

1 科技英语的特点 Features
1.1 长句 Long sentences A与B成(正/反)比例与成正反比例
e.g. For direct current and low-frequency (directly) alternating current (up to a few thousand A be (reversely) proportional to B cycles per second) the resistance is reversely proportional to the cross-sectional (inversely ) area of the path the current must travel; that (direct) is , given two conductors of the same A be in (reverse) proportion/ratio to B material and having same length , but (inverse) differing in crossing-sectional area , the one resistance is reversely proportional (reciprocal) with larger area will have the lower to area, that is, resistance. ratio of 3 to 7. 它们之间比率为3比7。 They are in a
收发器
1 科技英语的特点 Features
1.1 长句 Long sentences the ratio of A to B ：A与B的比率有两种方法简化长句，以正确把握长句句意—— 有两种方法简化长句，以正确把握长句句意 Insulation 绝缘，insulated ，insulating 依据谓语动词把复合句分解成一组简单句。依据谓语动词把复合句分解成一组简单句。 dielectric constant 介电常数依据关键词简化词组。依据关键词简化词组。 e.g. The ratio of the capacitance with some material other than air between the plates, to the capacitance of the same capacitor with air insulation, is called the dielectric constant of that particular material. ratio is called constant

电子信息英语复习资料

电子信息英语复习资料英语复习资料英译汉：electron tube 电子管integrated circuit 集成电路voltage drop 电压降Ohm’s Law 欧姆定律electromotive force（emf）电动势building block 构件（标准组件）direct current 直流电alternating current 交流电remote vehicles 宇宙飞船source supply/power supply电源negative terminal负极positive terminal 正极dry cell 干电池series circuits 串联电路parallel circuits 并联电路film technique薄膜技术monolithic technique 单片技术operational amplifier 运算放大器block diagram 方框图relaxation oscillator 张弛振荡power amplifier 功率放大器push-pull amplifier 推挽放大器changing electric field 交变电场magnetic fields磁场electromagnetic waves 电磁场receiving antenna 接收天线wireless telegraphy 无线电报handy multimeter 指针式万用表electron gun 电子枪control grid 控制栅（极）electron beam 电子束sinusoidal oscillator 正弦波振荡器switching circuit 开关电路voltage level 电平rectangular waveform 方波形sawtooth waveform 锯齿形波differentiated waveform 微分波形alternating voltages 交变电压magnetic induction 磁感应static transformer 静电变压器luminous discharge tube 气体放电管primary winding 一次绕组secondary winding 二次绕组audio frequercies 音频ferromagnetic path 磁路flux lines 磁力线Dolby Surround Soud 杜比环绕声full-bandwidth 全带宽digital audio coding 数字音频编码DVD-Video DVD录像带DVD-ROM disc DVD-ROM光盘laser disc 激光唱盘phosphor screen 荧光屏optical fiber 光钎internet access 因特网访问（接入）Video-on-Demand视频点播deep-bass handling sound 超低音Center sperker 中置音箱surround speaker 环绕音箱setup process 设置步骤recording medium 存储卡recordng mode 记录模式image size 影像尺寸zoom lens 变焦镜头zoom ring 变焦环shutter button 快门按钮frequency synthesizer 频率合成器home theater 家庭影院Dolby Pro-Logic receiver 杜比定向逻辑接收机power distribution systems 配电系统alternating current system 交变电流系统intelligence transmission 信息传送electromagnetic spectrum 电磁频谱closed-switch condition 开关闭合状态open-switch condition 开关断开状态cellular telephone 蜂窝式（便携式）电话cordless telephone set 无绳电话机half/full duplex 半（全）双工模式the plasma flat panel display 等离子平板显示器portable AM broadcast receivers 袖珍调幅广播接收机（收音机）缩写：AM=amplitude modulation调幅FM=frequercy modulation 调频r-f=radio-frequency 射频DTV=Digital TV数字电视STB=Set-Top Box 机顶盒Hi-Fi=High-Fidelity 高保真CRT=cathode-ray tube阴极射线管LAN=Local Area Network 局域网LCD=liquid crystal display 液晶显示器NIC=Network Interface Card 网卡MAU=Medium Attachment Unit 媒体连接器HDTV=High-Definition TV高清晰电视VCR=Video CassetteRecorder 盒式录像机中译英：黑白电视机black-and-white television 调谐负载 a tuned load 硅晶体管silicon transistor 负载电阻load resistor锗晶体管germanium transistor 负载电流load current信息时代information age 电压放大器voltage amplifier基本原理the basic principle 推挽放大器push-pull amplifier 电子元件electronic component 功率放大器power amplifier 真空二极管vacuum diode 脉冲放大器pulse amplifier单片single chip 电流放大器current amplifier面板face-plate 电子原理electronic principle表笔test probe/test-lead plug 使用手册service manual读数reading 电信号electric signal连线：1.fixed resistor 6非线性电阻2.the amount of resistance 5对电流的电阻力3.electric field 8一个二端原件4.capacity reactance 7比例常数5.digital circuits 2电阻值6.nonlinear resistor 1固定电阻7.the constant of proportionality 4容抗8.a two-terminal element 3电场1.logic circuits 5数字电路2.voltage pulse 4方波信号3.the closed-switch condition 6负脉冲4.square-wave signal 3闭合状态5.The opposition to the current 1逻辑电路6.the negative pulse 2电压脉冲1.closed circuit minus 4 minus2.as a matter of fact 7 cell3.open circuit 6 be composed of4.negative 3 a circuit which was broken5.positive 2 in fact6.consist of 1 a circuit that the current can flow through7.battery 5 plusGlobal System for Mobile Communicaton(GSM)全球移动通信系统Definition(定义)Global system for mobile communication (GSM) is a globally accepted standard for digital cellular communication. GSM is the name of a standardization group established in 1982 to create a common European mobile telephone standard that would formulate specifications for a pan-European mobile cellular radio system operating at 900 MHz. It is estimated that many countries outside of Europe will join the GSM partnership.全球移动通信系统是全球性公认的标准的数字蜂窝通信。

第3章电子信息类专业英语(李白萍)

Unit Three Data Communications
Initially, both the airline and banking operations can be established on a private basis, which would minimize the need for switching operations. But in both cases, the need to expand beyond private operations soon arises. In the case of the airlines, the need arises to access the facilities of other airlines; and in the case of the banks, certain common data facilities may be shared with other banks. Even though private networks may suffice for many services, the need to provide data communications between urban centers leads to regional and national networks. In the U.S., the Bell System, the independent telephone companies and specialized data communication networks are involved as carriers of such data.
Unit Three Data Communications

电子信息专业英语第1章

Unit 1 科技英语基础知识(一)
(3) 非谓语动词多。英语语法有一条特定要求，即在英语的每个简单句中只能有一个谓语动词，如果读到几个动作，就必须选出主要动作当谓语，而将其余动作用非谓语动词形式，才能符合英语语法要求。这就是英语为什么不同于其他语言，有非谓语动词，而且用得十分频繁的原因。非谓语动词有三种: 动名词、分词(包括现在分词、过去分词)和不定式。
数词: naught，one，two，ten，twenty-eight， hundred，thousand，million，billion，trillion，first， second，third，one half，two third，a quarter， seven percent
连接词: and，as，as if，as well as，both ... and， either ... or，but，not only ... but also，for，if， even if，or，yet，while
Unit 1 科技英语基础知识(一)
例4 If we consider binary transmission， the complete information about a particular message will always be obtained by simply detecting the presence or absence of pulse.
形容词: all，great，high，large，more，small， good，big，round，square，hard，little, simple， complex，basic，common，internal，external， usual

2011-2012电子信息工程专业英语复习提纲

2011-2012 电子信息工程专业英语复习提纲一题型：1、缩写2、词组翻译（中译英）3、选词填空4、英译汉5、汉译英二、主要内容⏹Lesson1主要句子P3- LINE 8 compared to the old technology, transistors were much smaller, faster, and cheaper to manufacture.P3-LINE14 What allowed the creation of modern processors was the invention of the integrated circuit, which is a group of transistors manufactured from a single piece of material and connected together internally, with extra wiringP3-LINE28 After the invention of the integrated circuit, it took very little time to realize the tremendous benefits of miniaturizing and integrating larger numbers of transistors into the same integrated circuit.P4-LINE4 Large-scale integration came to refer to the creation of integrated circuits that had previously been made form multiple discrete components.P4-LINE9 Building on the success of earlier integration efforts, engineers learned to pack more and more logic into a single circuit.⏹Lesson 2P6-LINE1 Memories can be made in mechanical, magnetic, optical, biological and electronic technologies.⏹Lesson 3P12-line4 Modern microprocessors contain complete floating point processors that can perform extremely sophisticated operations on large floating point numbers.P14-LINE15 One problem with today’s RAM chips is that they forget everything once the power goes off.P14-LINE22 The BIOS instructions do things like test the hardware in the machine, and then it goes to the hard disk to fetch the boot sector.P15-LINE23 Every instruction can be broken down as a set of sequenced operations like these that manipulate the components of the microprocessor in the proper order.P15-LINE33 In a pipelined architecture, instruction execution overlaps. So even though it might take five clock cycles execute each instruction , there can be five instructions in various stages of execution simultaneously.⏹Lesson 4P31-line11 Passive components had much better drift characteristics than active components had, thus if an amplifier’s gain could be made dependent on passive components, the problem would be solved.P31-LINE28 Well, time has proved Harry right, but there is a minor problem that Harry didn’t discuss in detail, and that is the oscillation problem.P32-LINE17 The programming was hard wired with a series of circuits that performed math operations on the data, and the hard wiring limitation eventually caused the declining popularity of the analog computer.P33-LINE28 The IC OP amp is here to stay; the latest generation op amps cover the frequency spectrum from 5-Khz GBW to beyond 1-GHz GBW.P33-LINE33 It can function as a line driver, comparator, amplifer, level shifter, oscillator, filter, signal conditioner, actuator driver, current source, voltage source, and etc..⏹Lesson 5P37-10 But how does the complex function in s relate to the circuit’s response to actual frequencies/P37-11 We use the expression jwL for impedance of an inductor and 1/jwC for that of a capacitor. P37-14 The jw in AC analysis is in fact the imaginary part of s, which, as mentioned earlier, is composed of a real part O and an imaginary part jw.P37-20 We have sliced the function along the jw axis and emphasized the RC low-pass filter’s frequncey response curve by adding a heavy line for function values along the positive j axis.P38-1 While the complex frequency’s imaginary part(jw) helps describe a response to ac signal, the real part helps describe a circuit’s transient respone.P38- 6 for the low-pass filter, pole positions further down the –o axis mean a high w0, a shorter time constant, and therefore a quicker transient response. Conversely ,a pole closer to the j axis causes a long transient response.P38-12 Because both the integrator and the RC filter have only one s in the denominator of their transfer functions, they each have only one pole. That is ,they are first-order filters.P39-7 You can obtain such a response by using inductance and capacitance in a passive circuit or by creating an active circuit of resistors,capacitors, and amplifers.P40 -13 Decreasing the Q moves the poles toward each other, whereas increasing the Q moves the poles in a semicircle away from each other and toward the jw axis.P41-4 Figure 5.4a shows the function as a curved surface, depicted in the three-dimensional space formed by the complex plane and a vertical magnitude vector.P42-2 On the other hand, if Q becomes infinite, the pole infinte, the pole…….⏹Lesson 6P44-3 This is capable of very high-speed conversion and thus can accommodate…P44-6 THE flash converter operates by simultaneously presenting…. N-bit word representing the input sample level.P45-5 These largely arise from the inevitable quantization ………..(dicated by the number of bits in the ADC)P45-15 THE reason for the difference between these two values………..trading off sampling rate as shown below.P46-9 A simple formula for the maximum processing ………and that the noise is uniformly distributed.P47-7 The converter is essentially a highly…..realize the processing gain.P47-19 IN fact , there are many tens of ADC Menthods in use, Successive Approximation………over its rivals.⏹Lesson 7P61-6 recent advances in semiconductor …………….conversion arena today.P61-11 IT operates by reducing a higher…………..to changes in its load.P61—17 the cost of the heatsink…………….applications.P61---23 THE average switching power………………the input voltage.P61---22 THE Buck converter is capable of kilowatts …………catastrophic results.P63---5 The amount of energy ……..demands of the load or,P65---14 THE companies building………………failure conditions.⏹Lesson 8P67---13 Crystal oscillators are the ……。