电子专业外文翻译3

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1、无 锡 职 业 技 术 学 院 毕业设计说明书（英文翻译） 2 A TRANSLATING There can be no doubt that the 1900s is remembered as the electronic century.Of course there have been other great advances,in medicine,intransport,inscience,in commerce,and many other fields,but where would they have been without the instruments and dev

2、ices that electronics has provided? How would you see a 3D virtual image of your beating heart with no electronics? How would you get money out of the bank on a Sunday night without electronics? Would you go to a pop concert that had no amplifiers,large screens or lighting effects? Dont say you woul

3、d rather watch TV-there would not be any. Electronics in the only 20th century started thriving at a greater speed unlike the per-20th century developments.The radio invented by the Italian genius Marconi and the work of Henry Hertz opened the road to further discoveries and inventions.The vacuum tu

4、bes at that time worked as a miraculous component for the radio devices. The invention of the television was a miraculous thing for the mankind.It was revolution in both communication technology and also for the world media.The distances between the continents did not seem to be far enough.The credi

5、t goes to the British engineer John Logic Baird who followed the footprints of Marconi and tried to send the images in the same way as the speech.After a long experiment he found that a series of static pictures if sent within a small interval of time in between them,seem to be moving. The real elec

6、tronics what it is called today was actually started after the discovery of the transistor effect.Transistor opened the road for the electronics and more importantly it opened the road for the computing world.Computers of various types started hitting the market and the research works got a boost. S

7、ome other problems were also there like the assembling of the electronic components on a single mother board.Jack Kilby in Texas Instruments found a very nice solution.He suggested to throw away all the wires and tried to connect the resistors,capacitors and transistors on the same piece of wafer in

8、ternally.Surprisingly his ideas worked and gave birth to the integrated circuit industries. As a students majoring in the electronic technology,you will study many courses such as: 1.Direct Current Circuits & Alternating Current circuits This course covers the fundamental theory of passive devices (

9、resistors,capacitor and inductor) and electrical networks supplied by a DC source,and then an introduction to the effects of alternating voltage and current in passive electrical circuits in given.This module also covers DC machines,three phase machines and transformers. 2.Analog Electronics This mo

10、dule introduces the characteristics of semiconductor devices in a range of linear applications and electronic circuits consisting of these devices.The following specific topics are covered.Semiconductor diodes: PN junction diodes,special purpose diodes； Transistors:field effect and bipolar 无 锡 职 业 技

11、 术 学 院 毕业设计说明书（英文翻译） 3 transistors； Signal amplifiers: practical amplifiers, biasing circuioperational amplifiers circuit； Other circuits: rectification, regulation and DC power supplies. 3.Digital Electronics In this unit the following topics are covered: basic concepts about Logic circuit,number r

12、epresentations,combinatorial logic circuits,sequential logic circuits,introduction to CMOS digital circuits, logic operations theorems and Boolean algebra,number operations(binary,hex and integers), combinatorial logic analysissynthesis,sequentiallogicanalysisand synthesis,registers,counters,bus sys

13、tems,CAD tools for logic design. 4.Microcontroller Systems The use of computers and microcontrollers is now found in every field of the electronics industry.This use will continue to grow at a rapid pace as computers become more complex and powerful.The ability to program these devices will make a s

14、tudent an invaluable asset to the growing electronic industry.This module enables the student to program a simple microcontroller to perform typical industrial tasks.Assembler and C are used to program the MPU(Microprocessor Unit).The student will set up the internal devices such as RS232 port,timer

15、,interrupts,counters,I/O ports,ADC etc.The program will then use these devices for control operations. 5.Computer Programming for Engineering Applications It is a continuation of more advanced programming techniques.The language of C will be used for teaching purposes.Emphasis is towards the use of

16、programming for engineering applications and problem solving. The electronic technology will provide a sound educational foundation to enable graduates to follow a career in:electrical engineering；power and control engineering；electronics；computer engineering；telecommunications engineering etc. M0re

17、 Courses 1.Signals and Systems This unit aims to teach some of the basic properties of many engineering signals and systems and the necessary mathematical tools that aid in this process.The particular emphasis is on the time and frequency domain modeling of linear time invariant systems.The concepts

18、 learnt in this unit will be heavily used in many units of study(in later years)in the areas of communication,control,power systems and signal processing.A basic knowledge of differentiation and integration,differential equations,and linear algebra is assumed. The following topics are covered.Contin

19、uous-time signals:classification and properties； Basic properties of systems:linearity,time-invariance, causality and stability.Linear time-invariant(LTI) systems: characterization by differential equations(including state space formulation),and the convolution integral.Fourier series and Fourier Tr

20、ansform:definition, properties,frequency response and analysis of LTI systems based on Fourier 无 锡 职 业 技 术 学 院 毕业设计说明书（英文翻译） 4 transform,sampling,correlation and power spectral density；Laplace transform: definition,properties,and analysis of LTI systems based on Laplace transform,solution of state s

21、pace equations using Laplace transform. 2.Circuit Theory and Design This unit of study assumes a basic knowledge of elementary circuit theory and operational amplifiers provided by earlier units.One aim of the unit is to enhance understanding of key aspects of the theory electric circuits.The main g

22、oal,however,is to equip students with the specialist knowledge to design active analog filters,to have an understanding of passive network design and to be in a good position to undertake further self study as required. The specific topics covered include the following:Fundamental concepts in circui

23、t theory:network functions,characteristic frequencies；Types of filter:lowpass,bandpass etc.Review of operational amplifiers:design of first and second order filters using operational amplifiers.Cascade design.Filter characteristics:Butterworth,Chebyshev,frequency transformations in design, sensitivi

24、ty design of passive LC ladder filters,a brief introduction to switched capacitor filters. 3.Control Theory This unit is concerned with the application of feedback control to continues-time,linear time-invariant systems.The emphasis is on fundamental theory rather than applications.Some background i

25、n linear systems theory and the Laplace transform is assumed.The prime aim of this unit of study is to develop a sound understanding of basics and a capacity for research and inquiry.Completion of the unit will facilitate progression to advanced study in the area and to work in industrial control. T

26、he following topics are covered.History of control:Modeling of physical processes,state variables and differential equations,dynamic response,review of Laplace transform,transfer functions and block diagrams,poles and zeroes； Design specifications in the time domain:basic feedback principles,effect

27、of feedback on sensitivity and disturbance rejection,steady state accuracy and stability,the Routh criterion,proportional integral and derivative control； Design using the root locus:rules for sketching root locus,lead and lag compensators,analogue and digital implementation of controllers；Frequency

28、 response:the Nyquist stability criterion,gain and phase margins,compensator design in the frequency domain；An introduction to state space design for single-input single-output systems:eigenvalues,zeroes and transfer functions,state variable feedback and design of estimators. 4.Communications Electr

29、onics and photonics This unit of study provides an introduction to the modeling and design of transmitters and receivers for electronic and optical communication subsystems.Students are expected to have a grasp of basic concepts related to electronics and circuits. The following topics are covered: Electronic oscillators: RC,LC,crystal oscillators,tuned electronic amplifiers,frequency selectivity,feedback