专业英语结课报告_09电信本1班__张程_25.doc

专业英语结课报告姓名： 张 程班级：09电信本1班学号： 2 5日期： 2012. 12. 2Message Communication an Its AdvantagesMessage communication can be more efficient than verbal communication in several ways. Anyone spent half a day dialing a number and only busy signals knows one of the ways: with message communication,both parties need not be simultaneously available for communication to take place. The message can be prepared at the originators convenience, sent,and then read at the receivers convenience. This improves worker efficiency.An interesting and unexpected benefit occurs,however,when the two stations are in different time zones. Here massage communication can actually be faster than the telephone. Consider time the situation where a San Francisco-based office must send an important message to a London location. If sent in the afternoon, the massage arrive after the London office has closed for the day. However, that urgent message is immediately avilable in London at the start of their next working day.,long before the San Francisco office reopens. If the telephone had been used to relay this message,it would not be recieved untill the San Francisco office opened on the next day,nearly half a day later than with the message delivery method. Realistically,message communication may be the only reasonable alternative between areas whose working hours may not overlap at all.Anther way in which message communication is more efficient is that it force the originator to clarify and refine thoughts. Often,a person who starts to organize and write down a message sees holes or inconsistencies in logic that can be rethought and corrected;with the telephone,these problems are not discovered immediately. This can lead to further calls to clear up errors.Moreover, message communication is general less expensive than verbal communication,even beyond the saving afforded by its efficiency. Long-distance phone charges can be slashed by communication via electronic mail on a message basis. With electronic message delivery over existing phone lines,the same amount of data can easily be transmitted 20 times(or 40 times)faster than in verbal communication. This assumes the use of a 1200 b/s(or 2400-b/s) modem,which transmits 1200(or2400) words per minute as compared to a verbal conversationrate of 60 words per minute.Another consideration is that message can be bathed;that is,they can be gathered together and sent on one call. This allows several short message to be placed together so that the minimum call length on long-distance calls is not a factor. Also,lower-priority message can be saved for overnight delievery to take advantage of lower rates.Information is usually clearer and easier to understand when it is written. Where large amounts of information are concerned ,message communication is the only practical method. Verbal communication is expensive in long-distance communication and very error prone. Message communication can easily be kept for reference;verbal communication is often forgotten. Message preparation involves putting the message into machine readable format that can be sent as data.The term data refers to some kind of information in the form of machine language. Data can be obtained from punched cards,paper tapes,magnetic tapes,disks,computer memories,or directly from machines. The term data transmission refers to electrical transmission of data from one point to another.A data communication link can be defined as a path for electrical transmission between two or more stations or terminals,and it may contain a single wire,a group of wires, a coaxial cable,a special part of the radio-frequency spectrum,or an optical-fiber cable.Electronic and information engineering is the application of the computer and modem technology for electronic information control and information processing the discipline, the main research information acquisition and processing, electronic equipment and information system design, development, application and integration. Now, electronic and information engineering has covered many aspects of the society, like telephone exchange station how to deal with various phone signal, a mobile phone is how to transfer our voice even image, the network around us how to transfer data, and even of the army of the information age how to confidential information transmission, are involved in electronic and information engineering application technology. We can through some basic knowledge learning know these things, and able to apply more advanced technology in new product research and electronic and information engineering is professionalThis program is to cultivate master the modern electronic technology theory, familiar with electronic system design principle and design method, have stronger computer, foreign language and corresponding engineering technology application ability, facing the electronic technology, automatic control and intelligent control, computer and network technology, electronic, information, communication field of broad caliber, the high quality, comprehensive development of integrated with innovation ability engineering technology talent development.Electronic information engineering major is learning the basic circuit of knowledge, and master the computer processing with the method of information. The first to have solid mathematical knowledge, for physics requirement is high, and mainly electrical; To learn many circuit knowledge, electronic technology, signal and system, computer control principle, communication principle, basic courses. Learning in electronic and information engineering design, to themselves have to connect with computer some circuit experiment, to operate and use tools requirements is also higher. Such as their connection sensor circuit, with computer set small communications system, will also visit some big company of electronic and information processing equipment, understanding mobile phone signal, cable TV is how to transmission, etc, and can organic ?Course classification:1. The mathematicsThe higher mathematics-(the department of mathematics mathematical analysis + space analytic geometry + ordinary differential equation) speak mainly is calculus, to learn the circuit of the people, the calculus (a yuan, multiple), curve surface integral, series, ordinary differential equation, Fourier transform, the other the Laplace transformation in the subsequent frequently encountered in theory.Probability and statistics-all communication, signal processing with relevant course with probability theory.Mathematical physical methods-some school graduate student intellect, some schools into complex variable functions (+ integral transform) and mathematical physics equation (is partial differential equations). Study the mathematical basis of electromagnetic field, microwave.May also be introduced stochastic process (need to probability basis) and functional analysis.2. TheoryThe circuit principle-basic of the program.Signal and system, continuous and discrete signal time domain, frequency domain analysis, is very important but also is difficultDigital signal processing-discrete signal and system analysis, signal digital transformation, digital filters, and so on.The application of information theory, information theory range is very wide, but electronic engineering often put this course speak into coding theory.Electromagnetic field and wave-the day the course, basically is the counterpart of the dynamics in the physics department of the electricity, using mathematical to study the magnetic field (constant electromagnetic field, time-dependent electromagnetic fields).3. CircuitAnalog circuit-the transistor, the op-amp, power supply, A/D and D/A.Digital circuit-a gate, trigger and combination circuit, timing circuit, programmable devices, digital electronic system4. ComputerMicrocomputer principle-80 x86 hardware work principle.Assembly language, direct correspondence of the CPU commands programming language.Single chip microcomputer CPU and control circuit, made a piece of integrated circuit, all sorts of electric equipment of all necessary, normal explanation 51 series.Cc+ language-(now speak only c language schools may not much) writing system programming language, and the development of hardware related often are used.Software foundation-(computer specialized data structure + + + algorithm operating system database principles + compilation approach + software engineering) can also be a few course, speaks the principle of software and how to write software.Professional training requirements:This major is an electronic and information engineering major. Students of this specialty mainly studies the signal acquisition and processing, the power plant equipment information system of professional knowledge, by electronic and information engineering practice of basic training, with design, development, application and integrated electronic equipment and the ability of the information system.Professional training requirements:This major is an electronic and information engineering major. Students of this specialty mainly studies the signal acquisition and processing, the power plant equipment information system of professional knowledge, by electronic and information engineering practice of basic training, with design, development, application and integrated electronic equipment and the ability of the information system.The graduates should have the following several aspects of knowledge and ability:1. Can a system to manage the field wide technology basic theoretical knowledge, to adapt to the electronic and information engineering extensive work range2. Grasp the electronic circuit of the basic theory and experiment technology, analysis and design of electronic equipment basic ability3. To grasp the information acquisition, processing the basic theory and application of the general method, has the design, integration, application and computer simulation of information system of the basic skills.4. Understand the basic principles of information industry, policies and regulations, understand the basic knowledge of the enterprise management5. Understand electronic equipment and information system of theoretical frontiers, with research, development of new system, the new technology preliminary ability6. Master of literature retrieval, material inquires basic ?The future:Electronic information engineering major is learning the basic circuit of knowledge, and master the computer processing with the method of information. The first to have solid mathematical knowledge, for physics requirement is high, and mainly electrical; To learn many circuit knowledge, electronic technology, signal and system, computer control principle, communication principle, basic courses. Learning in electronic and information engineering design, to themselves have to connect with computer some circuit experiment, to operate and use tools requirements is also higher. Such as their connection sensor circuit, with computer set small communications system, will also visit some big company of electronic and information processing equipment, understanding mobile phone signal, cable TV is the ? how to transfer Along with the social informatization of thorough, the most industries need electronic and information engineering professionals, and a high salary. Students can be engaged in electronic equipment and information system design, application development and technical management, etc. For example, make electronic engineers, design develop some electronics, communication device; Do software engineer, hardware design, development and all kinds of relevant software; Do project executive, planning some big system, the experience, knowledge requires high; Still can continue to study to become a teacher, engaged in scientific research work, etc.The first few years of the computer professional than hot, in recent years professional to this choice in the gradually rational and objective. Students and parents consider is more of a more advantageous to the personal self based on long-term development of the starting point.In this industry, seems to have the potential law: a short career. So the body not old heart first, thought the hope the way how to turn what should IT management, sales, or under IT the bodies from beginning to the past business, or simply turned. ., exactly what to do, still wandering in the, in the confusion, the code of a few years ago life seems to be erased it shall not plan, leaving only the deserted what some memories.Too much about the industrys bad, many, many elders kind advice, in computer professional students in the heart of the buried the uneasy seeds, whether should continue to choose the bank, or career path should be explicit turn? Choose this line, is likely to mean that the choice of physical and mental suffering course, accept the industry of experience.Any one industry all have their own bright and gloomy, just people dont understand. For just the us towards campus, has entered the society for seniors learn elder sister, for different positions of each elder, life is always difficult, brilliant casting is progressive, we can not only see industry bright beautiful beautiful appearance, and neglect of its growth lift behind the difficult, the gap between the two extreme