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1、To gain some information about evolution of the video and sound devices.To obtain information quickly in a text by understanding the headings.To learn to be cooperative and creative.,Learning goals:,Welcome,Check our homework,取得突破：制造第一台彩色电视：在大范围内：使为某人获得：较少比率的人：给上发条：电子元件：便携式卡式播放器：,Make breakthroughCo
2、nstruct the first colour TVOver vast distancesMake accessible to sb.A small percentage ofWind upElectrical componentsPortable cassette player,LCD screen,Iphone,evolution,M7 Unit1,Living with technology,1.Who developed the system used for the most early TV broadcast?2.When were the satellites used to
3、 broadcast TV?3.Where and when were the first tape recorders made?4.What types of sound and video go digital?,Fast reading,the CD,the VCD and the DVD,In 1928,in Germany,In 1962,John Logie Baird,Reading strategy,Early history of TV,The modern age:satellite TV,Early history of sound recorders,Sound an
4、d video recorders,Sound and video go digital,The future,Early history,modern,Early history,go digital,future,（modern),understanding,headings,Early history of,The modern age,How is the passage organized?,in order of time,The future.,The evolution of video and sound devices,Video devices,Sound devices
5、,Video devices,Sound devices,Careful reading,Contributions,Video devices,Careful reading,Name,Name,Make breakthroughs in the development of TV,Modern TVs depend on his principles,Contributions,Careful reading,Video devices,John Logie Baird,Philo Farnsworth,be primitive,with drawbacks,Construct the f
6、irst colour TV in 1928,effects,develop a system which was _ to make most early TV broadcasts,used,Regular colour TV broadcasts began in 1951,Regular colour TV broadcasts began in the UK in 1967,The first colur TV programme was broadcasted in 1938,More people prefer colour TVs to black-and-white TVs,
7、Careful reading,Video devices,allow TV to be broadcast live over vast distances make TV accessible to people who live far away from cities,Yes,they can get the signals broadcast by the local TV companies.,Without owning satellite dishes,can people benefit from satellite TV?,Portable cassette players
8、,video recorders,CDs,The VCD,The DVD,evolution of sound devices,Soundrecorders,Tape recorders,Video recorders for TV stations useVideo recorders for home use,Thomas Edison,Emile Berliner,Using round tube,Using discs,The _ of the record player using discs to _ round tubes marks the _ of the modern re
9、cord player.,invention,replace,birth,True or falseSteel tape was heavy and difficult to use.2.Paper tape was difficult to use because it can be broken.3.People today use plastic tape to replace steel and paper ones,T,T,F,easier to use but often broken,Which of the following statements is wrong accor
10、ding to the article?,A.In 1982,the first CDs were made available.B.CDs are often used for storing and playing sound because they are lighter than traditional recorders and cassettes C.In 1993,the VCD was born and two years later the DVD was born.D.The DVD is now the standard for recording and playin
11、g back video.,have better sound quality,The future,With the development of digital technology,people use PCs,the internet or portable storage to _ sound and video.Technology is now changing _ faster for people _ keep pace with,_ will make the future _.,store,which,unforeseeable,too,to,record,appeare
12、d,birth,accessible,alternatives,regularly,programme,first,put,invented,Suppose Steve Jobs were still alive,what do you think he would like the next apple to be?,Group work:,Useful expressions,Jobs:Good ladies and gentlemen,welcome to my press conference Now its time for you to ask questions.Reporter
13、 A:Hi,Jobs,Im a reporter from CCTV,can you give us some information bout your next new product?Jobs:Reporter B:Im a reporter of CNNJobs:OK,thank you for coming to my press conference.Thats all for today.,Presentation,The first was the one that Eve ate The second was the one that fell on Newtons head
14、 The third isthe one that Steve Jobs built.Where is the forth one?,Thank you!,Homework,Read the passage again after class and underline the difficult and important points.Finish the everyday exercises.,My imagination,True or falseSome of the first tape recorders used plastic tape to record on.Record
15、s and cassettes do not offer as good a sound quality as CDs.New technology will soon make many of the things talked about in the article out of the date.,T,T,F,steel,sound devices,Sound recorders,Thomas Edison,Emile Berliner,Using round tube,Using discs,The _ of the record player using discs _ round
16、 tubes marks the _ of the modern record player.,invention,replace,birth,Tape recorders,materials,Steel tape,Paper tape,Too heavy and difficult to carry,Easier to use but often broken,Portable cassette players,video recorders,CDs,The VCD,The DVD,evolution of sound devices,Plastic tape,Careful reading
17、,develop a system _ to most early TV broadcasts,be primitive,applied,Conduct the first colour TV in 1928,The first colur TV programme was broadcasted in 1938,Regular colour TV broadcasts began in 1951,Regular colour TV broadcasts began in the UK in 1967,More colour TVs than black-white TVs were bein
18、g used within five years,Make breakthroughs in the development of TV,effects,Modern TVs use many of the principles first discovered by him,allow TV to be broadcast live over vast distance make TV accessible to people who live far away from cities,2.Can people without owning satellite dishes benefit
19、from the satellite TVs?,Yes,they can get the signals broadcast by the local copanies,with drawbacks,history of TV,1925,1938,Colour broadcasts began in the USA.,Satellites began to be used to broadcast TV.,1967,1929,The first long-distance TV broadcast was made between the UK and the USARegular publi
20、c broadcasting began in New York.John Logie Baird constructed the first colour TV.,recorded,available,The VCD was born.,The DVD was invented.,ten,sound devices,using,?,Future,Contributions,Careful reading,Video devices,John Logie Baird,Philo Farnsworth,be primitive,with drawbacks,Construct the first
21、 colour TV in 1928,Make breakthroughs in the development of TV,Modern TVs depend on his principles,effects,develop a system which was _ to make most early TV broadcasts,used,Regular colour TV broadcasts began in 1951,The first colur TV programme was broadcasted in 1938,Regular colour TV broadcasts began in the UK in 1967,More people prefer colour TVs to black-and-white TVs,
