电子与通信技术专业英语Unit-I-课件1.pptx

1、刘 骋 蔡 静 刘小芹 主编电子与通信技术专业英语（第5版）高职高专电子信息类“十三五”规划教材English on Electronic and Telecommunication Technology1、复杂长句多2、被动语态多3、非谓语动词多4、词性转换多专业英语的特点01Unit Unit Basic Knowledge of ElectronicsLesson 1 Lesson 1 Knowing the Electronic Components Unit Unit New WordsNew Wordselectronic,ilektrnikadj.电子的,电子 仪器的electr

2、onics,ilektrniks n.电子学，电学，电子工业component kmpunntn.成分，元件 adj.组成的，构成的 symbol simbl n.符号，标志，象征resistorrizistn.电阻器New WordsNew Wordsrestrict ristrikt vt.限制,约束,限定current krnt n.电流seriessiri:z n.连续,系列,丛书,级数capacitorkpsit n.电容器charget:d n.电荷inductorindkt n.感应器，电感New WordsNew Wordsrestrict ristrikt vt.限制,约束,

3、限定current krnt n.电流seriessiri:z n.连续,系列,丛书,级数capacitorkpsit n.电容器charget:d n.电荷inductorindkt n.感应器，电感New WordsNew Wordsmagnetic mnetik adj.磁的,有磁性的,有吸引力的fieldfi:ld n.场diodedaiud n.二极管valvevlv n.电子管,真空管transistortrnsist n.晶体管integrated intireitid adj.综合的,完整的New WordsNew Wordscircuit s:kit n.电路chiptip

4、n.芯片semiconductor,semikndkt n.半导体silicon silikn n.硅,硅元素anodenud n.阳极,正极cathode kud n.阴极microphone maikrfun n.扩音器,麦克风New WordsNew Wordsspeaker spi:k n.扬声器,喇叭fuse fju:z n.保险丝,熔丝filament filmnt n.细丝,灯丝motor mut n.发动机,电动机solenoid sulnid n.螺线管switch swit n.开关Phrases and ExpressionsPhrases and Expressions

5、light-emitting diode发光二极管AC(=Alternating Current)交流电DC(=Direct current)直流电There are a large number of symbols which represent an equally large range of electronic components.It is important that you can recognize the more common components and understand what they actually do.A number of these compo

6、nents are drawn below and it is interesting to note that often there is more than one symbol representing the same type of component.Lesson 1 Knowing the Electronic ComponentsChinese Translation of TextsChinese Translation of Texts这些符号代表了绝大多数电子元件。能够识别更多的普通元件以及了解他们的实际用途是很重要的。下面画出了一些电子元件，有趣的是一种类型的元件，常

7、常可以用多种符号表示。第1课 认识电子元器件Chinese Translation of TextsChinese Translation of TextsResistors Resistors restrict the flow of electric current,for example a resistor is placed in series with a light-emitting diode(LED)to limit the current passing through the LED.Fig.1-1 shows is resistor example and circui

8、t symbol.Resistors may be connected either way round.They are not damaged by heat when soldering.Chinese Translation of TextsChinese Translation of Texts电阻电阻阻碍电流的流动，例如一个电阻与一个发光二级管LED串联来限制流过LED的电流。图11所示为电阻实物图和电路符号。电阻可以连接在任一回路中。他们不会因焊接高温而损坏。Chinese Translation of TextsChinese Translation of TextsCapac

9、itors Capacitors store electric charge.They are often used in filter circuits because capacitors easily pass AC(changing)signals but they block DC(constant)signals.Fig.1-2 capacitor examples and circuit symbol.Chinese Translation of TextsChinese Translation of Texts电容电容存储电荷。因为电容使交流信号容易通过而阻隔直流信号，所以他们

10、经常被用在滤波电路中。图12为电容实物图和电路符号。Chinese Translation of TextsChinese Translation of TextsInductorAn inductor is a passive electronic component that store senergy in the form of a magnetic field.An inductor is a coil of wire with many windings,often wound around a core made of a magnetic material,like iron.

11、Fig.1-3 Inductor examples and circuit symbol.Chinese Translation of TextsChinese Translation of TextsChinese Translation of TextsChinese Translation of Texts电感 电感是一个无源电子元件，它以磁场的形式存储能量。电感是一个由电线缠绕了许多圈的线圈，经常缠绕在像铁这样的磁材料的磁芯上。图13为电感实物图和电路符号。Diodes Diodes allow electricity to flow in only one direction.The

12、 arrow of the circuit symbol shows the direction in which the current can flow.Diodes are the electrical version of a valve and early diodes were actually called valves.Fig.1-4 shows Diode examples and circuit symbol.Chinese Translation of TextsChinese Translation of Texts 二极管 二极管允许电流仅从一个方向流过。电路符号的箭

13、头指示了电流能流过的方向。二极管是真空管的电子版，实际上，早期的二极管就叫真空管。图14为二极管实物图和电路符号。Chinese Translation of TextsChinese Translation of Texts Transistors There are two types of standard transistors,NPN and PNP,with different circuit symbols.The letters refer to the layers of semiconductor material used to make the transistor.F

14、ig.1-5 is Transistors examples and circuit symbol.Chinese Translation of TextsChinese Translation of Texts 晶体管 标准的晶体管有两种类型，NPN型和PNP型，他们的电路符号不同。字母（N和P）意味着制造晶体管的半导体材料的不同。图15为晶体管实物图和电路符号。Chinese Translation of TextsChinese Translation of Texts Integrated Circuits(Chips)Integrated Circuits are usually c

15、alled ICs or chips.They are complex circuits which have been etched onto tiny chips of semiconductor(silicon).The chip is packaged in a plastic holder with pins spaced on a 0.1(2.54mm)grid which will fit the holes on stripboard and breadboards.Very fine wires inside the package link the chip to the

16、pins.Fig.1-6 Integrated Circuits example.Chinese Translation of TextsChinese Translation of Texts 集成电路（芯片）集成电路通常被称为ICs或芯片。他它们是固化在微小的半导体（硅）芯片上的复杂电路。该芯片被封装在一个塑料固定物上，引脚间距0.1（2.54mm），这样的栅格适合带形板和面包板的孔距。在封装里面用非常纤细的导线连接芯片的引脚。图16为集成电路实物图。Chinese Translation of TextsChinese Translation of Texts Light Emittin

17、g Diodes(LEDs)LEDs emit light when an electric current passes through them.LEDs must be connected the correct way round,the diagram may be labelled“a”or“+”for anode and“k”or“-”for cathode(yes,it really is“k”,not“c”,for cathode!).The cathode is the short lead and there may be a slight flat on the bod

18、y of round LEDs.Fig.1-7 is LED examples and circuit symbol.Chinese Translation of TextsChinese Translation of Texts 发光二极管（LEDs）当电流流过LED时，它发出光。LEDs必须连接正确的回路，电路图中可以标“a”或者“”表示阳极，标“k”或者“-”表示阴极。阴极是短的引脚并且在LEDs圆形体内可能是微小扁平的那一端。图17为LED实物图和电路符号。Chinese Translation of TextsChinese Translation of Texts Other El

19、ectronic Components Fig.1-8 is other electronic components examples and circuit symbol.Chinese Translation of TextsChinese Translation of TextsChinese Translation of TextsChinese Translation of Texts 其他的电子元件 图1-8为其他电子元件的实物图和电路符号。可变电阻器蜂鸣器（麦克风）扬声器保险丝灯泡/灯丝电动机螺线管开关NotesNotesThere are a large number of s

20、ymbols which represent an equally large range of electronic components.这些符号代表了绝大多数的的电子元件。1NotesNotesIt is impor tant that you can r e c o g n i z e t h e m o r e c o m m o n components and understand what they actually do.能够识别更多的普通元器件以及了解他们的实际用途是很重要的。2NotesNotesA number of these components are drawn

21、 below and it is interesting to note that often there is more than one symbol representing the same type of component.下面画出了许多电子元件，你会发现一个有趣的现象一个符号可以代表相同类型的元件，而且这样的符号不只一个。3NotesNotesThey are complex circuits which have been etched onto tiny chips of semiconductor(silicon).The chip is packaged in a pla

22、stic holder with pins spaced on a 0.1”(2.54mm)grid which will fit the holes on stripboard and breadboards.他们是固化在微小的半导体（硅）芯片上的复杂电路。该芯片被封装在一个塑料固定物上，其引脚间距为0.1英寸（2.54mm），这样的栅格将适合带形板和面包板的孔距。4NotesNotesA number of these components are drawn below and it is interesting to note that often there is more than

23、 one symbol representing the same type of component.下面画出了许多电子元件，你会发现一个有趣的现象一个符号可以代表相同类型的元件，而且这样的符号不只一个。5ExercisesExercises 1.Write T(true)or F(false)beside the following statements about the text.a.One symbol represents a type of component.b.Resistors are damaged by heat when soldering.c.Capacitors

24、are not often used in filter circuits.d.Both capacitor and inductor are passive electronic components.e.Inductors store electric charge.f.Diodes allow electricity to flow either one direction.g.Diodes also are called valves.h.The symbol of NPN and PNP transistors is same.i.ICs are complex circuits w

25、hich have been etched onto tiny chips of semiconductor.j.LED is one type of diodes.ExercisesExercises 1.Write T(true)or F(false)beside the following statements about the text.a.One symbol represents a type of component.b.Resistors are damaged by heat when soldering.c.Capacitors are not often used in

26、 filter circuits.d.Both capacitor and inductor are passive electronic components.e.Inductors store electric charge.f.Diodes allow electricity to flow either one direction.g.Diodes also are called valves.h.The symbol of NPN and PNP transistors is same.i.ICs are complex circuits which have been etched

27、 onto tiny chips of semiconductor.j.LED is one type of diodes.F（L5）F（L10）F（L12）T（L16）T（L16）F（L21）T（L23）F T（L30）TExercisesExercises2.Match the following terms to appropriate definition or expression.a.ACb.DCc.Semiconductor d.IC e.field 1.A tiny“chip”containing many individual circuits which work toge

28、ther to perform a function.2.A material that is neither a conductornor an insulator.3.The direction of current is constant.4.A portion of space surrounding a body in which the forces due to the body can be detected.5.it changes polarity periodically.ExercisesExercises2.Match the following terms to a

29、ppropriate definition or expression.a.ACb.DCc.Semiconductor d.IC e.field 1.A tiny“chip”containing many individual circuits which work together to perform a function.2.A material that is neither a conductornor an insulator.3.The direction of current is constant.4.A portion of space surrounding a body

30、 in which the forces due to the body can be detected.5.it changes polarity periodically.ExercisesExercises3.Fill in the missing words according to the text.a.In the common components,may be connected either way round.b.is a passive electronic component that store electric chage.c.Inductors store ene

31、rgy in the form of .d.Diodes allow electricity to flow in direction.e.The of the LED is the short lead and there may be a slight flat on the body of roundLEDs.ExercisesExercises3.Fill in the missing words according to the text.a.In the common components,resistors may be connected either way round.b.

32、Capacitor is a passive electronic component that store electric chage.c.Inductors store energy in the form of a magnetic field.d.Diodes allow electricity to flow in only one direction.e.The cathode of the LED is the short lead and there may be a slight flat on the body of roundLEDs.ExercisesExercise

33、s4.Translate following paragraph into Chinese.a.Modern advances in the fields of computer,control system,communications have a close relationship with electronics.ExercisesExercises4.Translate following paragraph into Chinese.a.Modern advances in the fields of computer,control system,communications

34、have a close relationship with electronics.a.计算机、控制系统和通信领域现代的进步和电子学有着密切的关系。ExercisesExercises4.Translate following paragraph into Chinese.b.The field of electronics includes the electron tube,transistor,integrated circuit and so on.ExercisesExercises4.Translate following paragraph into Chinese.b.The

35、 field of electronics includes the electron tube,transistor,integrated circuit and so on.b.电子学领域包括真空管、晶体管和集成电路等。ExercisesExercises4.Translate following paragraph into Chinese.c.Although resistors,capacitors and inductors form important elements in electronic circuit,it is essential to know something

36、 about resistance,capacitance and inductance.ExercisesExercises4.Translate following paragraph into Chinese.c.Although resistors,capacitors and inductors form important elements in electronic circuit,it is essential to know something about resistance,capacitance and inductance.c.尽管电阻器、电容器和电感器是形成电子电路

37、的重要基础，但是介绍电阻、电额电感仍是很必要的。ExercisesExercises4.Translate following paragraph into Chinese.d.Electronic technology is developing rapidly in the world.And electronics industry is equipped to make yet another giant step forward.ExercisesExercises4.Translate following paragraph into Chinese.d.Electronic technology is developing rapidly in the world.And electronics industry is equipped to make yet another giant step forward.d.电子技术在全世界发展迅速。电子工业也已做好准备向前迈进一大步。刘 骋 蔡 静 刘小芹 主编电子与通信技术专业英语（第5版）高职高专电子信息类“十三五”规划教材English on Electronic and Telecommunication TechnologyEnd