2014佳木斯大学电子信息专业英语考试范围(作业题)(20140529)

Technical English Test for Electronic Information EngineeringDepartment____________ Class___________ Name____________SECTION 1Fill in the blanks with proper terms (30 minutes).SECTION 2Translate the following passages into Chinese (40 minutes).1.Digital signal processing tasks can be performed by all processors. Specialized digital signalprocessors (DSPs), however, perform these tasks most efficiently and most quickly. While traditional processors follow the V on Neumann architecture model, which assumes a shared single memory to be used for both program instructions and data, DSPs use the Harvard or modified Harvard architecture, which includes multiple program and data memories, along with multiple buses to access them.2.The basic services that the IMT-2000 network is supposed to provide to its users are: 1.High-quality voice transmission. 2. Messaging (replacing e-mail, fax, SMS, chat, etc.). 3.Multimedia (playing music, viewing videos, films, television, etc.). 4. Internet access (Web surfing, including pages with audio and video).3.The image sensor employed by most digital cameras is a CCD. Some low-end cameras useCMOS technology. While CMOS sensors will almost certainly improve and become more popular in the future, they probably won't replace CCD sensors in higher-end digital cameras.4.Make sure the camera has the right resolution for your needs. If you are going to take snapshotsand e-mail them to friends, then you don't need anything more than 640x480 pixel resolution.Buying the resolution that you need lets you save money (and hard disk space). On the other hand, if you want to print enlarged versions of your photos, you'll need a 2-megapixel or 3-megapixel camera.SECTION 3Read the following passages and answer questions (30 minutes).Passage oneCD-quality audio requires a transmission bandwidth of 1.411 Mbps. Clearly, substantial compression is needed to make transmission over the Internet practical. For this reason, various audio compression algorithms have been developed. Probably the most popular one is MPEG audio, which has three layers (variants), of which MP3 (MPEG audio layer 3) is the most powerful and best known. Large amounts of music in MP3 format are available on the Internet, not all of it legal, which has resulted in numerous lawsuits from the artists and copyright owners. MP3 belongs to the audio portion of the MPEG video compression standard.Audio compression can be done in one of two ways. In waveform coding the signal is transformed mathematically by a Fourier transform into its frequency components. The amplitude of each component is then encoded in a minimal way. The goal is to reproduce the waveform accurately at the other end in as few bits as possible.The other way, perceptual coding, exploits certain flaws in the human auditory system to encode a signal in such a way that it sounds the same to a human listener, even if it looks quite different on an oscilloscope. Perceptual coding is based on the science of psychoacoustics—how people perceive sound. MP3 is based on perceptual coding.The key property of perceptual coding is that some sounds can mask other sounds. Imagine you are broadcasting a live flute concert on a warm summer day. Then all of a sudden, a crew of workmen nearby turns on their jackhammers and start tearing up the street. No one can hear the flute any more. Its sounds have been masked by the jackhammers. For transmission purposes, it is now sufficient to encode just the frequency band used by the jackhammers because the listeners cannot hear the flute anyway. This is called frequency masking—the ability of a loud sound in one frequency band to hide a softer sound in another frequency band that would have been audible in the absence of the loud sound. In fact, even after the jackhammers stop, the flute will be inaudible for a short period of time because the ear turns down its gain when they start and it takes a finite time to turn it up again. This effect is called temporal masking.Answer the following questions within 50 words. Q1:Why is audio compression needed?Q2: What is mp3?Q3: What does the word psychoacoustics mean?Q4: What is the aim of waveform coding?Q5: What is perceptual coding?Passage TwoAlthough over 50 years old, the standard television signal is still one of the most common way to transmit an image. Figure 1 shows how the television signal appears on an oscilloscope. This is called composite video, meaning that there are vertical and horizontal synchronization (sync) pulses mixed with the actual picture information. These pulses are used in the television receiver to synchronize the vertical and horizontal deflection circuits to match the video being displayed. Each second of standard video contains 30 complete images, commonly called frames. A video engineer would say that each frame contains 525 lines, the television jargon for what programmers call rows. This number is a little deceptive because only 480 to 486 of these lines contain video information; the remaining 39 to 45 lines are reserved for sync pulses to keep the television's circuits synchronized with the video signal.Determine the following statement is true (T) or false (F):No. T/F StatementQ6: ( )The term composite video is an alias of standard television signal.Q7:( )There are more than one methods for video transmission mentioned in this passage.Q8:( )The composite video is a combination of frames, picture information and sync pulses.Q9:( )The number 30 frames/second is a little deceptive.Technical English Test for Electronic Information EngineeringDepartment____________ Class___________ Name____________SECTION 1Fill in the blanks with proper terms (30 minutes).SECTION 2Translate the following passages into Chinese (40 minutes).5.While traditional processors follow the V on Neumann architecture model, which assumes ashared single memory to be used for both program instructions and data, DSPs use the Harvard or modified Harvard architecture, which includes multiple program and data memories, along with multiple buses to access them. This arrangement means that much less waiting is required when instructions or numbers are fetched from memory.6.ITU recommended that all governments reserve spectrum at 2 GHz so devices could roamseamlessly from country to country. Later, it was recognized that 2 Mbps is not currently feasible for users who are too mobile (due to the difficulty of performing handoffs quickly enough) .7.Just like a conventional camera, a digital camera has a series of lenses that focus light to createan image of a scene. But instead of focusing this light onto a piece of film, it focuses it onto a semiconductor device that records light electronically. A microprocessor then breaks this electronic information down into digital data.8.Make sure the lens will handle the pictures you plan to take. If you don't have the right lens, itcan be hard to take the best pictures. For example, if very crisp detail is important in your pictures, you'll probably want a high optical zoom number. Be sure to try out the lens system ona camera before you purchase it. Digital cameras come with a huge variety of lenses, so be sureto shop around.SECTION 3Read the following passages and answer questions (30 minutes).Passage oneNature moves in the form of a sine wave, be it an ocean wave, earthquake, sonic boom, explosion, sound through air, or the natural frequency of a body in motion. Energy, vibrating particles and other invisible forces pervade our physical universe. Even light–part particle, part wave–has a fundamental frequency, which can be observed as color. Sensors can convert these forces into electrical signals that you can observe and study with an oscilloscope. Oscilloscopes enable scientists, engineers, technicians, educators and others to “see” ev ents that change over time.Oscilloscopes are indispensable tools for anyone designing, manufacturing or repairing electronic equipment. In today’s fast-paced world, engineers need the best tools available to solve their measurement challenges quickly and accurately. As the eyes of the engineer, oscilloscopes are the key to meeting today’s demanding measurement challenges.The usefulness of an oscilloscope is not limited to the world of electronics. With the proper transducer, an oscilloscope can measure all kinds of phenomena. A transducer is a device that creates an electrical signal in response to physical stimuli, such as sound, mechanical stress, pressure, light, or heat. A microphone is a transducer that converts sound into an electrical signal.Oscilloscopes are used by everyone from physicists to television repair technicians. An automotive engineer uses an oscilloscope to measure engine vibrations. A medical researcher uses an oscilloscope to measure brain waves. The possibilities are endless.Answer the following questions within 50 words.Q1: Are oscilloscopes signals sources? Why not?Q2: Does the word “demanding” mean difficult or easy?Q3: How can an oscilloscope measure the temperature change over time? Q4: What function does a sensor or a transducer perform?Q5: Please give the reason why oscilloscopes are regarded as the eyes of engineers?Passage TwoAlthough over 50 years old, the standard television signal is still one of the most common way to transmit an image. Figure 1 shows how the television signal appears on an oscilloscope. This is called composite video, meaning that there are vertical and horizontal synchronization (sync) pulses mixed with the actual picture information. These pulses are used in the television receiver to synchronize the vertical and horizontal deflection circuits to match the video being displayed. Each second of standard video contains 30 complete images, commonly called frames. A video engineer would say that each frame contains 525 lines, the television jargon for what programmers call rows. This number is a little deceptive because only 480 to 486 of these lines contain video information; the remaining 39 to 45 lines are reserved for sync pulses to keep the television's circuits synchronized with the video signal.Determine the following statement is true (T) or false (F):No. T/F StatementQ6: ( )The term composite video is an alias of standard television signal.Q7:( )There are more than one methods for video transmission mentioned in this passage.Q8:( )The composite video is a combination of frames, picture information and sync pulses.Q9:( )The number 30 frames/second is a little deceptive.Q10:( )The sync pulses are used to control the deflection circuits in the TV receivers.Page 11 of 12Page 12 of 12。

一、根据英文单词写出中文词义（每题1分共20分）silicon 硅2 power dissipation 功耗3 flip flop 触发器4 base band 基带5 micron 微米6 assembly language 汇编语言7 transient response 瞬态响应8 quality factor 品质因子9 power supply 电源10. quantization level 量化电平11. undersampling 欠采样12. dielectric 介电的13. decibel 分贝14. duty cycle 占空比15. transducer 传感器16. emulation 仿真17. power-up 加电18. buffer 缓冲器19. semi-custom 半定制20. synthesis 综合二、根据中文词义写出英文单词（每题1分共20分）1. 电流源current source2．晶体管transistor3．周期period4．稳定性stability5．矢量vector6．复位reset7．除法division8．振荡器oscillator9．锁存器latch10．滤波器filter11．电感inductance12．电容capacitance13．寄存器register14．正反馈positive feedback15．并联parallel16．谐振resonance17. 晶体crystal18．原理图schematic19．整流器rectifier20．增益gainWhat is a filter? A filter is a device that passes electric signals __at_ certain frequencies or frequency ranges __while_ preventing the passage of others.Filter circuits are used ___in____ a wide variety of applications. In the filed of telecommunication (在电信领域),band-pass filters are used in the audio frequency range (0kHz to 20kHz) for __modem and speech processing__ (调制解调器和语音处理).High-frequency band-pass filters(several hundred MHz) are used for ____channel selection_ (信道选择)in telephone central offices. Data acquisition systems usually require _anti-aliasing low-pass filters__（抗混叠低通滤波器) as well as low-pass noise filters in their preceding __signal conditioning_ (信号调理)stages. System power supplies often use band-rejection filters to suppress the 60-Hz frequency and high frequency transients. In addition, there are filters that do not filter_ (滤除)any frequencies of a complex input signal, but just add a ___linear phase shift__ (线性相移)to each frequency component，thus contributing a constant __time delay__（时延）.These are called ___all-pass filter__ (全通滤波器).At high frequencies (>1 MHz), all of these filters usually consist __of_ passive components __such as__ inductors (L), resistors (R), and capacitors(C). They are then __called______ LRC filters. In the low frequency range (1 Hz to 1 MHz), however, the inductor value becomes very large and the inductor itself gets quite bulky, ___making__ economical production difficult. In these _cases_____, _active filters_(有源滤波器) becomes important. Active filters are circuits that use _operational amplifier__ (运算放大器) as the active device ___in__ combination with some resistors and capacitors to provide an LRC-like filter performance at low frequency.四. 翻译（每题5分共40分）1. As in the first-order case, the second-order low-pass transfer function tends to zero as frequency tends to infinity.当频率趋近于无穷时，二阶低通滤波器的传输函数趋近于零（和一阶低通滤波器的传输函数一样）。

《电⼦信息专业英语》课程期末考试卷（A卷）1 共2页第1页XXXX 职业技术学院20 19⾄2020学年第⼆学期考核试卷课程名称__电⼦信息专业英语___ 卷号 _A__ 课程考核类别：□考试□考查考核形式开卷笔试使⽤专业班级 XX 移动通信技术班出卷⼈ __XXX_______ 审卷⼈__XXX___ 考试时间__90___分钟⼀、Judge true and false according to technical knowledge.（每⼩题1分，共10分）1. Multimedia means many forms of communication such as audio and video.( )2. An embedded controller may lack any human-readable interface devicesat all. ( )3. There is no movement in the animation. ( )4. The microcontroller units use the embedded design and have higherintegration. ( )5. Before applying DSP, a digital signal must be converted into analog form.( )6. To avoid self-heating, the current through the RTD must be keptsufficiently low and constant. ( )7. The roles of the encoder and the demodulator are almost the same in thatboth prepare the signal appearing across its output terminals. ( )8. The Third Generation is the mobile multimedia based on CDMA technology.( )9. Insert an ammeter in the circuit to measure current. ( )10. View shortcut menus by left-clicking with the mouse. ( )⼆、Translate the following phrases and expressions.（每⼩题2分，共30分）(1)document (2)menu (3)version(4)integration (5)sideband (6)interference(7)transducer (8)detector (9)protocol(10)static graphic images (11) serial ports (12)read-only memory (13)an envelope detector(14)power amplifier (15)communication system三、Match Column A with Column B.（每⼩题2分，共10分）Column A Column B.（1）toolbar a. a device measure the temperature of environment base on the variation of resistance (2)DSP b. the medium used to transmit thesignal from the transmitter to the receiver (3)temperature sensing device c. common used computer commands chosen from the View/ menu, whichare displayed in tool buttons(4)amplification d. the processing of signals bydigital means(5)channel e. to compensate for the loss ofsignal power四、Choose the best answer.（每⼩题2分，共20分）1. The 555 integrated circuit is used for .A. timingB. filterC. amplifierD. instrument2. GPS determines by computing the difference between the time asignal is sent and the time it is received.A. distanceB. timeC. locationD. length3. Wireless communications means transmission of information by .A. optical fiberB. cableC. radioD. fixed telephone4. Resistance-Temperature Detector is a device which be used tomeasure .A. temperatureB. resistanceC.voltageD. current5. Digital television receiver covert the ananlog, or , electronictelevision signals received by an antenna into an electronic digital code.A. separateB. continuousC. slenderD.disperse6. The phrase ”volatile memory ” can be replace by .A. ROMB.RAMC. EEPROMD. EPROM7. A digital signal consits of a stresm of numbers, usually(but notnecessary) in form.专业班级_____________ 学号______________ 姓名________________装订线A. binaryB. decimalC. analogD. octal8. The radio receiver has the task of the imcoming modulated signal.A. amplifyingB. transmittingC. modulatingD. demodulating9. The chooses the best form for the signal in order to optimize its detection at the ouput.A. encoderB. decoderC. modulatorD. demodulator10. The value of one resitance is 2kΩ, another is 4kΩ, these two resistor are in parallel with eachother and in series with a battery of 12V. The current following through the resistor which resistance is 4kΩis .A. 9mAB. 6mAC. 3mAD. 2mA五、Translate the following sentences into Chinese.（每⼩题6分，共30分）1. Multimedia technology combines audio and visual material to enhance communication and enrich multimedia presentation.2. In addition to all arithmetic and logic elements of a general purpose microprocessor, the microcontroller usually also integrates additional elements such as read-only and read-write memory, and input/output interfaces.3. In a broadcasting system, irrespective of whether it is based on amplitude modulation or frequency modulation, the receiver not only has the task of demodulating the incoming modulated signal, but it is also required to perform some other system functions such as carrier-frequency tuning, filtering, amplification.4. Television is a system of sending and receiving pictures and sound by means of electronic signals transmitted through wires and optical fibers or by electromagnetic radiation.5. Multimedia services add high speed data transfer to mobile devices, allowing new video, audio and other applications through mobile phones —allowing music and television and the Internet to be accessed through a mobile terminal.1 共2页第1页。

信息科学与电子工程专业英语课后答案--王朔中科技英语课件 ExercisesUnit 1 Exercises Unit 1 Exercises(1) Translate the following sentences into Chinese. (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 andbroader 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 acurrent.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 theperiod in the provided dialogue box, while keeping thepulse 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1 HMILYYLIMH科技英语课件 Exercises不变。

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。

1."In most cases, these signals originate as sensory data from the real world: seismic vibrations visual images, sound waves, etc. DSP isthe mathematics, the algorithms, and the techniques used to manipulate these signals after they have been converted into a digital form." 在大多数情况下，这些信号来源于人对真实世界的感觉，比如地震的震动，视觉图像，声音波形等。

数字信号处理是一种数学工具，是一种用来处理那些将上述信号转换成数字形式后的信号的算法和技术。

2.Fourier’s representation of functionsas a superposition of sines and cosines has become Ubiquitous for both the analytic and numerical solution of differential equations and for the analysis and treatment of communication signals 函数的傅里叶表示，即将函数表示成正弦和余弦信号的叠加，这种方法已经广泛用于微分方程的解析法和数值法求解过程以及通信信号的分析和处理。

3.If f (t ) is a nonperiodic signal, the summation of the periodic functions ,such as sine and cosine, does not accurately represent the signal. You could artificially extend the signal to make it periodic but it would require additional continuity at the end points . 如果f(t)是非周期信号，那么用周期函数例如正弦和余弦的和，并不能精确的表示该信号f(t)。

作业1：14.02.27* The second area empolys techniques that are quite different from those of conventional hardware design and also require a substantial investment in special test equipment for efficient development and debugging.第二个领域使用的技术与不传统硬件设计有较大的不同，为了有效的开发和调试也需要在一些特殊测试装备大量投入。

* It does not mean that the device can operate properly at that speed.那就意味着器件不能在那样的速度下恰当的工作作业2：14.03.04*It is essential in digital circuits that signal edges occur in a known order.在数字电路中信号边缘的已知顺序发生是至关重要的。

（对应老师给的1）* If speed is not required, the Low Power class is a good choice, not only because of low power consumption, but because its low speed makes it insensitive to many high-frequency spikes and glitches.如果不要求速度，则低功耗类型是一个好的选择，不仅因为低功耗而且由于低速率使得它对很多高频率尖脉冲和短时脉冲不敏感。

作业3：14.03.06（对应老师给的2）* This differs from the other forms of logic in that the transistors are operated in a linear mode and not allowed to go into saturation.这与其他逻辑形式不同，因为三极管工作在线性模式下并且不能进入饱和状态。