无线通信外文翻译

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1、 南 京 工 程 学 院 毕业设计文献资料翻译 （原文及译文） 原文名称： Wireless Communications 课题名称： 无线电子门铃设计 学生姓名： 顾玲玲 学 号： 208080603 指导老师： 马新华 所在系部： 通信工程学院 专业名称： 电子信息工程 2012 年 3 月 南 京 1 Wireless Communications Modern computer technology, industrial revolution, the world economy from the capital into the economy to knowledge econo

2、my. Field in the electronic world, from the 20th century into the era of radio to computer technology in the 21st century as the center of the intelligent modern era of electronic systems. The basic core of modern electronic systems are embedded computer systems (referred to as embedded systems), wh

3、ile the microcontroller is the most typical and most extensive and most popular embedded systems. Fist, radio has created generations of excellence in the world. Fifties and sixties in the 20th century, the most representative of the advanced electronic, technology is wireless technology, including

4、radio broadcasting, radio, wireless communications (telegraph) ,Amateur Radio, radio positioning, navigation and other telemetry, remote control, remote technology. Early that these electronic technology led many young people into the wonderful digital world, radio show was a wonderful life, the pro

5、spects for science and technology. Electronics began to form a new discipline. Radio electronics, wireless communications began e-world journey. Radio technology not only as a representative of advanced science and technology at that time, but also from popular to professional fields of science, att

6、racting the young people and enable them to find a lot of fun. Ore from the bedside to the superheterodyne radio； report issued from the radio amateur radio stations； from the telephone, electric bell to the radio control model. Became popular youth radio technology, science and technology education

7、 is most popular and most extensive content. So far, many of the older generation of engineer, experts. Professor of the year are radio enthusiasts. Fun radio technology, radio technology, components to the radio-based remote control, telemetry, remote electronic systems, has trained several generat

8、ions of technological excellence. Second, from the popularity of the radio era to era of electronic technology. The early radio technology to promote the development of electronic technology, most notably electronic vacuum tube technology to semiconductor electronic technology, Semiconductor technol

9、ogy to realize the active device miniaturization and low cost, so more popular with radio technology and innovation, and to greatly broaden the number of non-radio-control areas. The development of semiconductor technology leads to the production of integrated circuits. Electronic design engineers 2

10、 no longer use the discrete electronics components designed circuit modules, and direct selection of integrated circuit components constitute a single system. They freed the design of the circuit unit dedicated to system design, greatly liberating the productive forces of science and technology； pro

11、mote the wider spread of electronic systems. Semiconductor integrated circuits in the basic digital logic circuits first breakthrough. A large number of digital logic circuits, such as gates, counters, timers, shift registers, and analog switches, comparators, etc., for the electronic digital contro

12、l provides excellent conditions for the traditional mechanical control to electronic control. Power electronic devices and sensor technology to make the original to the radio as the center of electronic technology turned to mechanical engineering in the field of digital control systems, testing in t

13、he field of information collection, movement of electrical mechanical servo drive control object. Semiconductor and integrated circuit unit-specific electronic technology a part of. 70 years into the 20th century, large scale integrated circuit appeared to promote the conventional electronic circuit

14、 unit-specific electronic systems development. Many electronic systems unit into a dedicated integrated device such as radios, electronic clocks, calculators, electronic engineers in these areas from the circuit, the system designed to debug into the device selection, peripheral device adapter work.

15、 Electronic technology, and electronic products enriched, electronic engineers to reduce the difficulty, but at the same time, radio technology, electronic technology has weakened the charm. The development of semiconductor integrated circuits classical electronic systems are maturing, remain in the

16、 large scale integrated circuit other than the shrinking of electronic technology, electronic technology is not the old days of radio fun times and comprehensive engineering training. Third, from the classic era of electronic technology to modern electronic technology of the times. 80 years into the

17、 20th century of economic change is most important revolution in the computer. The computer revolution in the most important sign is the birth of the computer embedded applications. Modern computer numerical requirements should be born. A long period of time is to develop the massive computer numeri

18、cal duty. But the computer shows the logic operation, processing, control, attracting experts in the filed of electronic control, they want development to meet the control, object requirements of embedded applications computer systems. If you meet the massive data-processing computer system known as general-purpose computer system, then