电子专业外文翻译3.doc
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1、A TRANSLATINGThere 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 devices that electronics has provide
2、d? 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 sayyou would rather watch TV-there would not
3、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 tubes at that time worked as a miracu
4、lous 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 credit goes to the British engineer John
5、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 electronics what it is called today was a
6、ctually 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.Some other problems were also there lik
7、e 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 internally.Surprisingly his ideas worked
8、 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 circuitsThis course covers the fundamental theory of passive devices (resistors,capacitor and inductor) and ele
9、ctrical 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 ElectronicsThis module introduces the characteristics of semi
10、conductor 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 transistors; Signal amplifiers: practical amplifiers
11、, biasing circuioperational amplifiers circuit; Other circuits: rectification, regulation and DC power supplies.3.Digital ElectronicsIn this unit the following topics are covered: basic concepts about Logic circuit,number representations,combinatorial logic circuits,sequential logic circuits,introdu
12、ction to CMOS digital circuits, logic operations theorems and Boolean algebra,number operations(binary,hex and integers), combinatorial logic analysissynthesis,sequentiallogicanalysisand synthesis,registers,counters,bus systems,CAD tools for logic design.4.Microcontroller SystemsThe use of computers
13、 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 student an invaluable asset to the growing electronic industry.This module enabl
14、es 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,interrupts,counters,I/O ports,ADC etc.The program will then use these devices
15、for control operations.5.Computer Programming for Engineering ApplicationsIt is a continuation of more advanced programming techniques.The language of C will be used for teaching purposes.Emphasis is towards the use of programming for engineering applications and problem solving.The electronic techn
16、ology 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 Courses1.Signals and SystemsThis unit aims to teach some of the basic properties o
17、f 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 learnt in this unit will be heavily used in many units of study(in later years)in th
18、e 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.Continuous-time signals:classification and properties; Basic properties of systems:linearity
19、,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 Transform:definition, properties,frequency response and analysis of LTI systems based on
20、 Fourier transform,sampling,correlation and power spectral density;Laplace transform: definition,properties,and analysis of LTI systems based on Laplace transform,solution of state space equations using Laplace transform.2.Circuit Theory and DesignThis unit of study assumes a basic knowledge of elem
21、entary 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 goal,however,is to equip students with the specialist knowledge to design active analog filters,to have an understanding
22、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 circuit theory:network functions,characteristic frequencies;Types of filter:lowpass,bandpass etc.Review of operational amplifie
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