大规模集成电路
可编程逻辑控制器
发光二极管
集成电路
交流
直流
数字信号处理 数字信号处理器
近距离无线通信
个人通信服务
掌上电脑（个人数字助理）
分组数据蜂窝
服务质量
无线电传输技术
超宽带
二、翻译公式
基本函数公式
英语-公式
1. a 22=()()
a b a b a b .
2. 3
232)4(x 1
x -+x
x x x .
3. ).......21(1
lim 2n n n +++∞→
n n n.
4. {a[()]}
, a b c d .
5. )
2cos(a 5
1πω
n b n n n n ∑==
a n
b n n 2
n n
. 6. ∏∞
=1
n n a
n .
7. (a 12,……) (a 12,……)
a a n.
8. e n n n =+∞→)11(lim
n n e.
9. n n squa ∞→lim n n a inf lim ∞→
a n n .
10. y’1
y x .
y x x .
11. ax e a dx y
-=222d
y x a e a x.
12. c a x a dx a x +-=-?||log a
a x a x a x a c.
13. dx ?+20acosx 11
π
0 a x x.
14. n m n m
a 1
a =- (a>0均为正整数)
a m n a , a , m n .
15. )2ln(1)(-+=x x f
x x 2 e.
16. x x x 3sin 4sin 33sin -≡
x x x .
公式-英语
3-22 ∑∞
=-∞
=-=n jwn e n h H n )(）（ω
H ω h n e j ω n n n . 3-23 ωωπωπ
πd e H n h n j ?-=)(21)( -∞≦n ≦∞
h n H w e j w n
w, n n
3-24 ωωωππ
d n h n h )cos()(1
)(0?=m 0≥n
h n H ω ω n ω n
. 3-25 h()(n) n ≧0
h n h n
3-26 otherwise M
n M n n h 0)(h {)(≤≤-=‘
H n h n n M n h n
3-27 ∑=-=-=M
n M
n z n h z H n )(）（‘
H Z h n z n M M. 4-1 →→
→→→???+=???s d t
D J l d H s )(c
C J D
4-2 4-3 →→
→→???=???s d t
B l d H s )(-c
C H B
4-4 0=?→
→?s d B s
B
4-5 dv ??=?→
→V s s d D ρ
D 4-6 →
→→→???=???s d A l d A s )(c
c A A. 4-7 →
→→→???=???V d A l d A v s
A A.
● 1840.在1840年之前就发现了热电效应，电解效应，和光电效应。
● a a “ ”爱迪生发现，在微弱的电流从加热的
灯丝流向真空管内附着的金属板，这可就是众所周知的爱迪生效应
● .采用真空管使得信号的控制成为可能，
这是早期的电报电话不能实现的，也是早期用高压电火花产生无线电波的发
射机所不能实现的
● .真空管放大微弱的音频信号，并将这些信号叠加在无线电
波上。
● ….晶体管的功能与真空管相似，但尺寸小，重量
轻，功耗低，工作更为可靠，它由金属电极和半导体材料构成，成本较低。
● .集成电路和微处理器的改进增强了可编程逻辑控制器的功
能。
● ’ 只要电池持续供电，并且导线没有断开，电子将
始终在回路中流动。
● a a .当电容与电池相连，电子将从电
池的负极流出，病聚集在电容与该端相联的极板上，称电容被充电
● a 只要电子束流过导体，就将在这个导体周围产生磁场。
● a a a .例如，玻璃在室温下是一个非常好的绝缘体，但当
它加热到相当高的温度时它就变成一个导体。
● .只要在两个独立的半导体间存在电压，则他们之间将会
产生一个磁场。
● “” a a a .通常导体里的自由电子式随机运动
的，没有确定的方向或速度，但是电子受力后可沿相同方向通过导体。
● a , , , , , , , , , .
信号与系统的概念出现在广阔的范围内，在科学技术的不同领域，如通信、
航空航天、电路设计、升学、地震学、生物医学工程、发电和输电系统、化
学过程控制和语言处理中都离不开这个概念的思想与技术。它在科学技术中发挥了重要作用。
●, a a , a a .
当系统的特征性描述要求完整的输入输出关系时，如果没有约束条件，及时知道了系统对某些特定输入产生的输出时，我们也并不知道系统对其他输入产生的输出。
● a a 1 0<<=1 0 .
举一个有限能量信号的例子：信号在0<<=1内其值为去，而其他时间范围取值为0。
●, , , a , .
当然这是有意义的，因为如果单位时间内存在一个非零的平均能量，那么在一个无限的时间间隔范围内，对其积分或者求和就会产生一个无限的能量总和。
●, .
我们可以在抽样的概念下进行连续时间和离散时间系统放在一起考虑。我们可以将一些离散时间系统的概念推广，用以处理抽样后的连续时间系统。
●.
许多具有不同应用的程序搜有相类似的数学描述，这是开发系统分析和设计通用工具软件的最重要的动机之一。
● a .
电子放大器一般都表示成三角形形状，内部器件并不分别表示出来。
●(+) (-) .
增大同相输入端的电压，会使输出电压增大；增大反向输入端的电压，会使输出电压减小。
●’t .
因为我们知道，运算放大器的两个输入端之间有无穷大的电阻，所以我们完全可以假设他们没有增加或分担任何电流。
●
, R1R2R1 R2.
换句话说，我们可以认为R1和R2串联，即通过R1的电流一定会通过R2.
●, : , , , . , , a .
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。
●’s a .
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。
●f(t) a , , , . .
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，并不能精确地表示该信号f(t)。你可以人为的拓展这个信号使其具有周期性，但这要求在端点处附加连续性。
●, , .
如果信号有急剧的过渡，就有必要对输入信号加窗，这样信号在端点出就会收敛于零。
● A a , , a a .
数字滤波器是一种数学算法，它可以用硬件、固件以及软件来实现。它作用于数字输入信号产生数字输出信号从而达到滤波目标。
.
用傅里叶级数设计滤波器的基本思想是计算出此滤波器的单位冲激响应来逼近所期望的滤波器的频率响应。
翻译：
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’s a c .
傅里叶变换的效用在于它能够在时域范围内分析它的频率内容。变换的第一步是将时域上的函数转换为时域表示。然后就可以分析信号的频率内容了。因为变换函数的傅里叶系数代表各个正弦和余弦函数在各自对应频率区间的分配。 a a .
傅里叶逆变换就会按你刚才设想的那样将频域数据转换为时域的’d .
离散型傅里叶变换是通过他有限的采样点来评估函数的傅里叶变换。采样点代表了其他时间的信号。
() a a . .
离散型傅里叶变换具有和连续型傅里叶变换几乎完全相同的对称特性。此外，通过离散型傅里叶变换的公式，我们可以轻易推出离散型傅里叶变换的公式。因为这两个公式几乎完全相同。
. , .
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)。你可以人为的拓展这个信号使其具有周期性，但是这要求在端点处附加连续性。窗口傅里叶变换能够更好的解决关于非周期信号的表示问题。窗口傅里叶变换同样适用于时域和频域上信号信息的提供。
f(t) a , ( ) . . () . .
通过窗口傅里叶变换，输入信号f(t)被分成许多小部分，每个部分都能分别分析它的频率内容。如果信号有急剧的过度，就有必要对输入信号加窗，这样信号在端点处就会收敛于零。通过加权函数，即着眼于与中间部分而不是区间端点附近，这样就完成了加窗。加窗效应是将信号集中在同一个时间段。
, f(t) , . , , .
a ’s . ..
通过样本来近似函数，及通过离散傅里叶变换去逼近傅里叶积分，需要使用一个矩阵，其顺序是全样本点的数量。通过一个按n2算术运算顺序的向量乘以一个n*n的矩阵，当采样点的增多的时候，问题就迅速恶化。但是，如果样本是均匀分布的，那么傅里叶矩阵可以被分解成一个只有几个稀疏矩阵的乘积，以及由此产生的因素课广泛应用在算术运算顺序。这就是所谓的快速傅里叶变换或。 a a n*n a n2 a a
a a
电子信息工程专业课程名称中英文翻译对照 （2009级培养计划）
实践环节翻译
高等数学Advanced Mathematics 大学物理College Physics 线性代数Linear Algebra 复变函数与积分变换Functions of Complex Variable and Integral Transforms 概率论与随机过程Probability and Random Process 物理实验Experiments of College Physics 数理方程Equations of Mathematical Physics 电子信息工程概论Introduction to Electronic and Information Engineering 计算机应用基础Fundamentals of Computer Application 电路原理Principles of Circuit 模拟电子技术基础Fundamentals of Analog Electronics 数字电子技术基础Fundamentals of Digital Electronics C语言程序设计The C Programming Language 信息论基础Fundamentals of Information Theory 信号与线性系统Signals and Linear Systems 微机原理与接口技术Microcomputer Principles and Interface Technology 马克思主义基本原理Fundamentals of Marxism 毛泽东思想、邓小平理论 和“三个代表”重要思想 概论 Thoughts of Mao and Deng 中国近现代史纲要Modern Chinese History 思想道德修养与法律基 础 Moral Education & Law Basis 形势与政策Situation and Policy 英语College English 体育Physical Education 当代世界经济与政治Modern Global Economy and Politics 卫生健康教育Health Education 心理健康知识讲座Psychological Health Knowledge Lecture 公共艺术课程Public Arts 文献检索Literature Retrieval 军事理论Military Theory 普通话语音常识及训练Mandarin Knowledge and Training 大学生职业生涯策划 （就业指导） Career Planning (Guidance of Employment ) 专题学术讲座Optional Course Lecture 科技文献写作Sci-tech Document Writing 高频电子线路High-Frequency Electronic Circuits 通信原理Communications Theory 数字信号处理Digital Signal Processing 计算机网络Computer Networks 电磁场与微波技术Electromagnetic Field and Microwave
外文资料 所译外文资料： 1. 作者G..Bouwhuis, J.Braat, A.Huijser 2. 书名:Principles of Optical Disk Systems 3. 出版时间：1991年9月 4. 所译章节：Session 2/Chapter9, Session 2/Chapter 11 原文： Microprocessor One of the key inventions in the history of electronics, and in fact one of the most important inventions ever period, was the transistor. As time progressed after the inven ti on of LSI in tegrated circuits, the tech no logy improved and chips became smaller, faster and cheaper. The functions performed by a processor were impleme nted using several differe nt logic chips. In tel was the first compa ny to in corporate all of these logic comp onents into a si ngle chip, this was the first microprocessor. A microprocessor is a complete computati on engine that is fabricated on a sin gle chip. A microprocessor executes a collecti on of machi ne in struct ions that tell the processor what to do. Based on the in struct ions, a microprocessor does three basic things: https://www.doczj.com/doc/1718917316.html,ing the ALU (Arithmetic/Logic Unit), a microprocessor can perform mathematical operatio ns like additi on, subtract ion, multiplicatio n and divisi on; 2.A microprocessor can move data from one memory location to another; 3.A microprocessor can make decisi ons and jump to a new set of in struct ions based on those decisi ons. There may be very sophisticated things that a microprocessor does, but those are its three basic activities. Microprocessor has an address bus that sends an address to memory, a data bus that can send data to memory or receive data from memory, an RD(read) and WR(write) line that lets a clock pulse sequenee the processor and a reset li ne that resets the program coun ter to zero(or whatever) and restarts executi on. And let ' s assume that both the address and data buses are 8 bits wide here. Here are the comp onents of this simple microprocessor: 1. Registers A, B and C are simply latches made out of flip-flops. 2. The address latch is just like registers A, B and C. 3. The program coun ter is a latch with the extra ability to in creme nt by 1 whe n told to do so, and also to reset to zero whe n told to do so. 4. The ALU could be as simple as an 8-bit adder, or it might be able to add, subtract, multiply and divide 8- bit values. Let ' s assume the latter here. 5. The test register is a special latch that can hold values from comparisons performed in the ALU. An ALU can normally compare two numbers send determine if they are equal, if one is greater
英语原文： Life of LED-Based White Light Sources The interest for using light-emitting diodes (LEDs) for display and illumination applications has been growing steadily over the past few years. The potential for long life and reduced energy use are two key attributes of this rapidly evolving technology that have generated so much interest for its use in the above mentioned applications. Traditionally, the lamp life of light sources commonly used in illumination applications is determined by subjecting them to a predetermined on/off cycle until half the number of light sources cease to produce light. Unlike these sources, LEDs rarely fail catastrophically; instead, their light output slowly degrades over time. Even if an LED is technically operating and producing light, at some point the amount of light produced by the LED will be insufficient for the intended application. Therefore, the life of an LED should be based on the amount of time that the device can produce sufficient light for the intended application,rather than complete failure. Based on this argument, a recent publication from an industry group defines the life of an LED device or system for use in general lighting applications as the operating time, in hours, for the light output to reach 70% of its initial value. The most widely used white LEDs incorporate a layer of phosphor over a GaN-based, short-wavelength light emitter. Usually, the phosphor is embedded inside an epoxy resin that surrounds the LED die. Some portion of the short-wavelength radiation emitted by the LED is down-converted by the phosphor, and the combined radiation creates white light.Early white LEDs were packaged similar to the indicator-style colored LEDs, specifically 5 mm and SMD (surface mount devices). Although these products demonstrated the concept of a white light source, they did not produce sufficient light for display and illumination applications. Furthermore, these indicator-style white LEDs had a relatively short life, 5000–10 000h to reach 70% light level under normal operating conditions. To address the higher luminous flux requirements, manufacturers have started to commercialize high-power illuminator LEDs that are presently producing over one hundred times the flux compared to indicator-style white LEDs. The higher light output is
电子信息工程电路编程中的AT89C51单片机 译文标题电路编程中的AT89C51单片机 AT89C51 In-Circuit Programming 原文标题 作者Robert W.Sparks等译名国籍美国斯帕克等W.罗伯特 Atmel Corporation 原文出处 摘要本应用说明的是ATMEL公司AT89C51的电路可编程闪存的微控制器。为在电路可编程AT89C51的应用提出了与应用程序相关的例子，它的修改要求支持在线编程。这种方法显示在该应用程序中的AT89C51单片机可通过商业电话线远程改编。本应用笔记中描述的电路，仅支持5伏电压下编程，需要使用一个AT89C51-XX-5。标准A T89C51的需要12伏电压。该应用程序的软件可从ATMEL下载。 总论 当不在进行程序设计的时候，在电路设计中的AT89C51设计将变得透明化。 在编程期间必须重视EA/VPP这一脚。在不使用外部程序存储器的应用程序中，这脚可能会永久接到VCC。应用程序使用的外部程序存储器要求这一脚为低电平才能正常运行。 RST在编程期间必须为高电平。应该提供一种方法使得电路通入电源以后，使RST代替主要的复位电路起到复位的作用。 在编程过程中，PSEN必须保持低电平，在正常运行期间绝不能使用。ALE/ PRO在编程过程中输出低电平，在正常运行期间绝不能使用 在编程过程中AT89C5I / 端口是用于模式应用程序，地址和数据选择的，可能要该控制器从应用的电路隔离。如何做到这一点取决于应用程序 输入端 在编程过程中，控制器必须与应用电路的信号来源隔离。带有三个输出状态的缓冲区在应用程序之间插入电路和控制器，同时在编程时缓冲区输出三种状态。一个多路复用器用于信号源之间进行选择，适用于任何一方的应用电路或编程控制器电路的信号 输出端 如果应用的电路可以允许端口在编程过程中的状态变化，则不需要改变电路。如果应电路的状态，必须事先在编程过程中的保持不变，可能在控制器和应用电路中插入锁存。存在编程期间是可用的，并保存应用程序的电路状态 应用实 如所示应用是AT89C5一个移动的显示情况。此应用程序有在电路重新编程时结果以图表的形式显示的简单能力。文本显示被设计作为其硬件的一部分，不能在无改编况下变化 显示的文本可DI开关选择两种模式之一中进行。在第一种模式的时候，进入个字符从右边显示和快速移动，通过每个元素显示其在最后的装配位置的左侧。 第二个模式，信息在信息窗口中右到左移动显示。这种模式与常常在股票价格的显示所使用的方法类似 输出包括四DL14141段的积分解码器和驱动程序的字母数字显示器。这就生1名显示元素，每个数字0-的显示能力，是大写字母，标点符号和一些字符。可示字符ASCII码范围20H-5F上电复位电路和一6 MH的晶体振荡器完成应用件程序。无论外部程序存储器或外部数据存储器都时可用的
transistor n 晶体管 diode n 二极管semiconductor n 半导体 resistor n 电阻器 capacitor n 电容器 alternating adj 交互的 amplifier n 扩音器，放大器integrated circuit 集成电路 linear time invariant systems 线性时不变系统voltage n 电压，伏特数 tolerance n 公差；宽容；容忍condenser n 电容器；冷凝器dielectric n 绝缘体；电解质electromagnetic adj 电磁的 adj 非传导性的 deflection n偏斜；偏转；偏差 linear device 线性器件 the insulation resistance 绝缘电阻 anode n 阳极，正极 cathode n 阴极 breakdown n 故障；崩溃 terminal n 终点站；终端，接线端emitter n 发射器 collect v 收集，集聚，集中insulator n 绝缘体，绝热器oscilloscope n 示波镜；示波器 gain n 增益，放大倍数 forward biased 正向偏置 reverse biased 反向偏置 P-N junction PN结 MOS（metal-oxide semiconductor）金属氧化物半导体 enhancement and exhausted 增强型和耗尽型 integrated circuits 集成电路 analog n 模拟 digital adj 数字的，数位的horizontal adj, 水平的，地平线的vertical adj 垂直的，顶点的amplitude n 振幅，广阔，丰富attenuation n衰减；变薄；稀薄化multimeter n 万用表 frequency n 频率，周率 the cathode-ray tube 阴极射线管 dual-trace oscilloscope 双踪示波器 signal generating device 信号发生器 peak-to-peak output voltage 输出电压峰峰值sine wave 正弦波 triangle wave 三角波 square wave 方波 amplifier 放大器，扩音器 oscillator n 振荡器 feedback n 反馈，回应 phase n 相，阶段，状态 filter n 滤波器，过滤器 rectifier n整流器；纠正者 band-stop filter 带阻滤波器 band-pass filter 带通滤波器 decimal adj 十进制的，小数的hexadecimal adj/n十六进制的 binary adj 二进制的；二元的octal adj 八进制的 domain n 域；领域 code n代码，密码，编码v编码 the Fourier transform 傅里叶变换 Fast Fourier Transform 快速傅里叶变换microcontroller n 微处理器；微控制器assembly language instrucions n 汇编语言指令 chip n 芯片，碎片 modular adj 模块化的；模数的 sensor n 传感器 plug vt堵，塞，插上n塞子，插头，插销coaxial adj 同轴的，共轴的 fiber n 光纤relay contact 继电接触器 single instruction programmer 单指令编程器 dedicated manufactures programming unit 专 供制造厂用的编程单元 beam n （光线的）束，柱，梁 polarize v（使）偏振，（使）极化 Cathode Ray Tube（CRT）阴极射线管 neuron n神经元；神经细胞 fuzzy adj 模糊的 Artificial Intelligence Shell 人工智能外壳程序 Expert Systems 专家系统 Artificial Intelligence 人工智能 Perceptive Systems 感知系统 neural network 神经网络 fuzzy logic 模糊逻辑 intelligent agent 智能代理 electromagnetic adj 电磁的 coaxial adj 同轴的，共轴的 microwave n 微波 charge v充电，使充电 insulator n 绝缘体，绝缘物 nonconductive adj非导体的，绝缘的 antenna n天线；触角 modeling n建模，造型 simulation n 仿真；模拟 prototype n 原型 array n 排队，编队 vector n 向量，矢量 wavelet n 微波，小浪 sine 正弦cosine 余弦 inverse adj倒转的，反转的n反面；相反v 倒转 high-performance 高精确性，高性能 two-dimensional 二维的；缺乏深度的 three-dimensional 三维的；立体的；真实的 object-oriented programming面向对象的程序 设计 spectral adj 光谱的 attenuation n衰减；变薄；稀释 distortion n 失真，扭曲，变形 wavelength n 波长 refractive adj 折射的 ATM 异步传输模式Asynchronous Transfer Mode ADSL非对称用户数字线Asymmetric digital subscriber line VDSL甚高速数字用户线very high data rate digital subscriber line HDSL高速数据用户线high rate digital subscriber line FDMA频分多址(Frequency Division Multiple Access) TDMA时分多址(Time Division Multiple Access) CDMA同步码分多址方式(Code Division Multiple Access) WCDMA宽带码分多址移动通信系统(Wideband Code Division Multiple Access) TD-SCDMA(Time Division Synchronous Code Division Multiple Access)时分同步码分多址 SDLC(synchronous data link control)同步数据 链路控制 HDLC(high-level data link control)高级数据链路 控制 IP/TCP(internet protocol /transfer Control Protocol)网络传输控制协议 ITU (International Telecommunication Union) 国际电信联盟 ISO国际标准化组织（International Standardization Organization）； OSI开放式系统互联参考模型（Open System Interconnect） GSM全球移动通信系统（Global System for Mobile Communications） GPRS通用分组无线业务(General Packet Radio Service) FDD(frequency division duplex)频分双工 TDD(time division duplex)时分双工 VPI虚路径标识符（Virtual Path Identifier）； ISDN（Integrated Services Digital Network）综 合业务数字网 IDN综合数字网（integrated digital network） HDTV (high definition television)高清晰度电视 DCT(Discrete Cosine Transform)离散余弦变换 VCI(virtual circuit address)虚通路标识 MAN城域网Metropolitan area networks LAN局域网local area network WAN广域网wide area network 同步时分复用STDM Synchronous Time Division Multiplexing 统计时分复用STDM Statistical Time Division Multiplexing 单工传输simplex transmission 半双工传输half-duplex transmission 全双工传输full-duplex transmission 交换矩阵Switching Matrix 电路交换circuit switching 分组交换packet switching 报文交换message switching 奇偶校验parity checking 循环冗余校验CRC Cyclic Redundancy Check 虚过滤Virtual filter 数字滤波digital filtering 伪随机比特Quasi Random Bit 带宽分配Bandwidth allocation 信源information source 信宿destination 数字化digitalize 数字传输技术Digital transmission technology 灰度图像Grey scale images 灰度级Grey scale level 幅度谱Magnitude spectrum 相位谱Phase spectrum 频谱frequency spectrum 智能设备Smart Device 软切换Soft handover 硬切换Hard Handover 相干检测Coherent detection 边缘检测Edge detection 冲突检测collision detection 业务集合service integration 业务分离/综合service separation/ integration 网络集合network integration 环形网Ring networks 令牌环网Token Ring network 网络终端Network Terminal 用户终端user terminal 用户电路line circuit 电路利用率channel utilization（通道利用率） 相关性coherence 相干解调coherent demodulation 数字图像压缩digital image compression 图像编码image encoding 有损/无损压缩lossy/lossless compression 解压decompression 呼叫控制Call Control 误差控制error control 存储程序控制stored program control 存储转发方式store-and-forward manner 语音\视频传输voice\video transmission 视频点播video-on-demand(VOD) 会议电视Video Conference 有线电视cable television 量化quantization 吞吐量throughput 话务量traffic 多径分集Multipath diversity 多媒体通信MDM Multimedia Communication 多址干扰Multiple Access Interference 人机交互man machine interface 交互式会话Conversational interaction
专业外语综合阅读与翻译报告 学院：信息电子技术学院 专业：电子信息工程 班级：一班 学籍号：******** 姓名：****** 成绩： 2016年5月20日
英文原文： With all the exciting developments in the realm of communications technology over the last few years it would be easy to think that we are living in times of the most astounding transformations. However, the technologies that so many of us are addicted to today mobile phones, the internet, satellite TV are built on the achievements of our endeavors. The history of communication goes back thousands of years. Each new development has transformed the world we live in. An understanding of the journey we have taken to get where we are now shows that today’s techniques are refinements of what came before. Really big revolutions may be still to come. communication begins with the first conversations between people it is believed that language developed through gestures using the hands and bodies, and had evolved into spoken tongues by the time of the great migration of humans from Africa some 100,000 years ago.The first long distance communication must have arisen shortly after conversation, with the discovery that it was possible to make oneself heard from a distance by shouting, or banging objects together to make a sound that travels far. The fire and the smoke it produces may also have been used for simple communication between separated groups. Communication techniques such as shouting and smoke signals allow people to make their mark over a wider area. The recording of information allowed human beings to communicate over great expanses of time. Cave paintings up to 36,500 years old have been found people from that far back are communicating with us today although it is hard to know what they were saying. 5,500 years ago, more systematized alphabets were developed by the Phoenicians. Sumerians and Egyptians. They also developed new ways of storing their information, some of which have survived till today. Scholars have had some success in translating these alphabets and the languages they convey, giving us insight into societies long dead. The realisations that it is possible to communicate through space and time are the two most important communication leaps in history. Everything that has come since has merely improved the efficiency of these two tasks. The next leap was the combination of writing and transmitting information. This begin with people or animals acting as couriers, delivering written messages. The first postal services were in China around 900BC. Human runners and birds were used to transport messages starting in at least 776BC, when the winner of the Olympic games was reported to the Athenians via homing pigeons possible the first journalist reporting back to base from a remote location. With the discovery of electricity the speed and range of communication once again began to increase. In 1793 Claude Chappe invented the Semaphore telegraph line, which allowed reliable
Infrared Remote Control System Abstract Red outside data correspondence the technique be currently within the scope of world drive extensive usage of a kind of wireless conjunction technique,drive numerous hardware and software platform support. Red outside the transceiver product have cost low, small scaled turn, the baud rate be quick, point to point SSL, be free from electromagnetism thousand Raos etc.characteristics, can realization information at dissimilarity of the product fast, convenience, safely exchange and transmission, at short distance wireless deliver aspect to own very obvious of advantage.Along with red outside the data deliver a technique more and more mature, the cost descend, red outside the transceiver necessarily will get at the short distance communication realm more extensive of application. The purpose that design this system is transmit customer’s operation information with infrared rays for transmit media, then demodulate original signal with receive circuit. It use coding chip to modulate signal and use decoding chip to demodulate signal. The coding chip is PT2262 and decoding chip is PT2272. Both chips are made in Taiwan. Main work principle is that we provide to input the information for the PT2262 with coding keyboard. The input information was coded by PT2262 and loading to high frequent load wave whose frequent is 38 kHz, then modulate infrared transmit dioxide and radiate space outside when it attian enough power. The receive circuit receive the signal and demodulate original information. The original signal was decoded by PT2272, so as to drive some circuit to accomplish customer’s operation demand. Keywords:Infrare dray；Code；Decoding；LM386；Redoutside transceiver
本科毕业设计（论文）中英文对照翻译 院（系部）电气工程与自动化 专业名称电子信息工程 年级班级 04级7班 学生姓名 指导老师
Infrared Remote Control System Abstract Red outside data correspondence the technique be currently within the scope of world drive extensive usage of a kind of wireless conjunction technique,drive numerous , the baud rate be quick, point to point SSL, be free from electromagnetism thousand Raos etc.characteristics, can realization information at dissimilarity of the product fast, convenience, safely exchange and transmission, at short distance wireless deliver aspect to own very obvious of advantage.Along with red outside the data deliver a technique more and more mature, the cost descend, red outside the transceiver necessarily will get at the short distance communication realm more extensive of application. The purpose that design this system is transmit customer’s operation information with infrared rays for transmit media, then demodulate original signal with receive circuit. It use coding chip to modulate signal and use decoding chip to demodulate signal. The coding chip is PT2262 and decoding chip is PT2272. Both chips are made in Taiwan. Main work principle is that we provide to input the information for the PT2262 with coding keyboard. The input information was coded by PT2262 and loading to modulate infrared transmit dioxide and radiate space outside when it attian enough power. The receive circuit receive the signal and demodulate original information. The original signal was decoded by PT2272, so as to drive some circuit to accomplish customer’s operation demand. Keywords:Infrare dray；Code；Decoding；LM386；Redoutside transceiver