2 Chapter Three Telecommunication Technology Chapter Study Tasks (3) In this chapter, you will be able to dentify the key concepts of telecommunication -Learn the basics of data and serial communications -Get the general ideas of the text and the extensive reading -Complete all the practice required Unit6 a part 1 Notes to Text L Part4 Extensive Reading Part 2 Word Study Part5 Notes to Passage Part3 Practice on Text Part6 Practice on Passage 2021/2/20 P1
2021/2/20 P.1 Unit 6 Telecommunication Technology Chapter Three @ Part 1 Notes to Text & Part4 Extensive Reading & Part 2 Word Study @ Part5 Notes to Passage @ Part3 Practice on Text @ Part6 Practice on Passage Chapter Study Tasks（3） In this chapter, you will be able to —Identify the key concepts of telecommunication —Learn the basics of data and serial communications —Get the general ideas of the text and the extensive reading —Complete all the practice required
a Part 1 Notes to text Key Concepts ofTelecommunication 1)In modern times, this process typically involves the sending of electromagnetic waves by electronic transmitters, but in earlier years it may have involved the use of smoke signals, drums or semaphore.在现代, 这种传递的典型方式就是使用电子发射器发送电子波。而 在较早的年代,传递方式可能用的是烟火讯号、击鼓声和 旗语通讯法 注释:注意 this process指代的是前文说的信号传递方式;第 二分句中的主语依然是指信号传递方式。 2021/2/20 P2
2021/2/20 P.2 @ Part 1 Notes to Text 1) In modern times, this process typically involves the sending of electromagnetic waves by electronic transmitters, but in earlier years it may have involved the use of smoke signals, drums or semaphore. 在现代， 这种传递的典型方式就是使用电子发射器发送电子波。而 在较早的年代，传递方式可能用的是烟火讯号、击鼓声和 旗语通讯法 注释： 注意this process指代的是前文说的信号传递方式；第 二分句中的主语it依然是指信号传递方式。 Key Concepts of Telecommunication
2)Early inventors in the field include Alexander Bell, Guglielmo Marconi and John Logie Baird.通信领域中的早期发 明家有贝尔、马可尼和贝尔德。 注释:Bell, Alexander Graham,(1847-1922),美国发明家; Guglielmo Marconi(1874—1937),意大利物理学家; Baird John Logie,(18881946),英国电视发明家。 3)Telecommunication is an im portant part of the world economy with the telecommunication industry's revenue being placed at just under3% of the gross world product..由于电信 业的收入差不多占了世界总产值的3%,所以电信是世界经济的一个 重要部分。 注释:介词短语wh.用作状语,表原因。现在分词短语 being placed则是宾语补足语。 2021/2/20 P3
2021/2/20 P.3 2) Early inventors in the field include Alexander Bell, Guglielmo Marconi and John Logie Baird. 通信领域中的早期发 明家有贝尔、马可尼和贝尔德。 注释：Bell，Alexander Graham，（1847-1922），美国发明家； Guglielmo Marconi（ 1874—1937），意大利物理学家；Baird， John Logie，（1888-1946），英国电视发明家。 3) Telecommunication is an important part of the world economy with the telecommunication industry's revenue being placed at just under 3% of the gross world product. 由于电信 业的收入差不多占了世界总产值的3%，所以电信是世界经济的一个 重要部分。 注释：介词短语with…用作状语，表原因。现在分词短语being placed…则是宾语补足语
4) This is to com bat attenuation that can render the signal indistinguishable from noise.这是为了防止信号衰减,而这种衰减 则是由噪音导致的信号模糊。 注释:this指上文所说的必须要有一个放大器或转发器;不定式to combat attenuation是表语。 5)Alternatively, one could allocate each channel a recurring segment of time over which to broadcast--this is known as time-division multiplexing and is sometimes used in digital communication.作为选择,你也可以给每个通道分配一个专门用来 播放的循环时间段一这就是所谓的时分多址,这种技术有时候被用于 数字通信。 注释:注意动词 allocate后面带的是双宾;短语 over which to broadcast中的 which指代 a recurring segment of time。 G20212120P4GG End 1
2021/2/20 P.4 4) This is to combat attenuation that can render the signal indistinguishable from noise. 这是为了防止信号衰减，而这种衰减 则是由噪音导致的信号模糊。 注释： this指上文所说的必须要有一个放大器或转发器；不定式to combat attenuation是表语。 5）Alternatively, one could allocate each channel a recurring segment of time over which to broadcast — this is known as time-division multiplexing and is sometimes used in digital communication. 作为选择，你也可以给每个通道分配一个专门用来 播放的循环时间段—这就是所谓的时分多址，这种技术有时候被用于 数字通信。 注释：注意动词allocate后面带的是双宾；短语over which to broadcast中的which指代a recurring segment of time。 End
Part 2 Word Study 1. semaphore n.旗语通讯法 1 .repeater n.转发器 2. gross. I.总值 12. amplify v.放大,增强 3. analogue n.模拟 13. combat v.抗击;防止 4. discrete adj.离散的 14 attenuation n.衰减 5. degrade v.降低…质量 15 render v.致使;造成 6. threshold n.极限 16. allocate v.分派,分配 7. intact adj.完整无缺的 17 recur v.循环 8. transceiver n无线电收发机,收发器 18 segment n.段,节 9. router n.路由器 19 modulation n.调制 10. route. v.发送 20. bluetooth n.蓝牙技术 2021/2/20 P.5 End
2021/2/20 P.5 End 1. semaphore n. 旗语通讯法 11.repeater n. 转发器 2. gross n. 总值 12.amplify v. 放大, 增强 3. analogue n. 模拟 13.combat v. 抗击; 防止 4. discrete adj. 离散的 14.attenuation n. 衰减 5. degrade v. 降低…质量 15.render v. 致使；造成 6. threshold n. 极限 16.allocate v. 分派, 分配 7. intact adj. 完整无缺的 17.recur v. 循环 8. transceiver n.无线电收发机, 收发器 18.segment n. 段，节 9. router n. 路由器 19.modulation n. 调制 10. route v. 发送 20.bluetooth n. 蓝牙技术 & Part 2 Word Study
Part3 Practice on Text Task 1: Listening training Dictation of some key words Directions: You will hear some key words twice, most of which are taken from the Word Study. Then finish the Crossword Puzzle. ( See you book p. 2. Dictation of some key expressions Directions: You will hear some key expressions twice, most of which are taken from this text. Then you are asked to complete the missing words 1)transmission-of signals 4)the gross world product_ 2)smoke signals 5) discrete alues 3)public telephone_ networks 6)an analogue_waveform 2021/2/20 P.6
2021/2/20 P.6 Task 1: Listening training Dictation of some key words Directions: You will hear some key words twice, most of which are taken from the Word Study. Then finish the Crossword Puzzle. (See you book p. ) 2. Dictation of some key expressions Directions: You will hear some key expressions twice, most of which are taken from this text. Then you are asked to complete the missing words. @ Part3 Practice on Text 1) ________________of signals 2) smoke______________ 3) __________________networks 4) the gross________________ 5) discrete________________ 6) an analogue______________ transmission signals public telephone world product values waveform
Task 2. Read. Write and Translate Read and Reply Directions: Students are required to read aloud the whole text after the teacher. Then give short answers to the following questions a)What may telecommunication have involved in early time? It may have involved the use of signals, drums or semaphore b)Why do we say that telecommunication is an important part of the world economy? Because the telecommunication industry's revenue is placed at just under 3% of the gross world produc c)What is the difference between a digital networks and an analoque network? A digital network may consists of one or more routers that route data to the correct user, while an analogue network may consist of one or more switches that establish a connection between two or more users 2021/2/20 P7
2021/2/20 P.7 Read and Reply Directions:Students are required to read aloud the whole text after the teacher. Then give short answers to the following questions: a) What may telecommunication have involved in early time? b) Why do we say that telecommunication is an important part of the world economy? Task 2: Read, Write and Translate It may have involved the use of signals, drums or semaphore. Because the telecommunication industry's revenue is placed at just under 3% of the gross world produc A digital network may consists of one or more routers that route data to the correct user, while an analogue network may consist of one or more switches that establish a connection between two or more users. c) What is the difference between a digital networks and an analogue network?
Read and Judge (F )1) Telecommunication is the transmission of signals over a short time for the purpose of communication (T)2) Telvevision, radio and telephone are devices that are used to assist the process of widespreading telecommunication (F)3) Telecommunication system mainly consists of a transmitter and a transmission mediun (T)4)Digital signals are much better than analogue signals. (T)5) Both digital signals and analogue signals are disturbed by noise when transmitted over a long distance G20212120P8G End 1
2021/2/20 P.8 ( )1) Telecommunication is the transmission of signals over a short time for the purpose of communication. ( )2) Telvevision, radio and telephone are devices that are used to assist the process of widespreading telecommunication. ( )3) Telecommunication system mainly consists of a transmitter and a transmission medium. ( )4) Digital signals are much better than analogue signals. ( )5) Both digital signals and analogue signals are disturbed by noise when transmitted over a long distance. Read and Judge End F T F T T
Read and Complete Directions: Read the following short passage. Complete it by filling in the missing words A receiver B a phone line C telecommunication D between E called F. numerous G because H transmitter I. mobile J systems Consider a radio broadcast: n this case the broadcast tower is the 1)H, the radio is the 2 )A and the transmission medium is free space. Often telecommunication 3)J are two-way and a single device acts as both a transmitter and receiver, or transceiver. For example, a 4)I. phone is a transceiver. Telecommunication over 5).B is called point-to-point communication 6)G it is between one transmitter and one receiver.7) C through radio broadcasts is 8)E broadcast communication because it is 9)Done powerful transmitter and 10)F receivers 2021/2/20 APVA End
2021/2/20 P.9 Directions:Read the following short passage. Complete it by filling in the missing words. A.receiver B. a phone line C. telecommunication D. between E. called F. numerous G. because H. transmitter I. mobile J. systems Consider a radio broadcast: In this case the broadcast tower is the 1)________, the radio is the 2)________and the transmission medium is free space. Often telecommunication 3)________are two-way and a single device acts as both a transmitter and receiver, or transceiver. For example, a 4)________ phone is a transceiver. Telecommunication over 5)________is called point-to-point communication 6)________it is between one transmitter and one receiver. 7)________through radio broadcasts is 8)________broadcast communication because it is 9)________one powerful transmitter and 10)________receivers Read and Complete End H A J I B G C E D F
Read and Translate Directions: Put the following sentences into English, using the words or phrases given 1)她受到的良好教育培养了她精通英语的能力。( shape) Very good education she recived has shaped her proficiency in English 2)这一笔钱是用于贫困儿童的学费的。( allocate This amount of money is allocated for the poor children s schooling 3)中华民族是由汉族和其它五十六个少数民族构成的。 consist of The Chinese nationality consists of Han nationality and other fifty-six minorities 4)昨天晚上台湾海峡的台风使海难再次发生( recur)。 The typhoon in the Taiwan Straits made the wreck recur yesterday evening 5)有很多政府高官涉嫌这次贿赂丑闻。( involve) Many highly-ranking government officers are involved in the bribery scandal. 202120P10 End
2021/2/20 P.10 1) 她受到的良好教育培养了她精通英语的能力。（shape） 2) 这一笔钱是用于贫困儿童的学费的。(allocate) 3) 中华民族是由汉族和其它五十六个少数民族构成的。(consist of) 4) 昨天晚上台湾海峡的台风使海难再次发生(recur) 。 5) 有很多政府高官涉嫌这次贿赂丑闻。(involve) Read and Translate Directions:Put the following sentences into English, using the words or phrases given. End Very good education she recived has shaped her proficiency in English. This amount of money is allocated for the poor children’s schooling. The Chinese nationality consists of Han nationality and other fifty-six minorities. The typhoon in the Taiwan Straits made the wreck recur yesterday evening. Many highly-ranking government officers are involved in the bribery scandal