Reading(5)：Theevolutionofvideoandsounddevices.ppt

1、Unit 1,Reading,The evolution of video and sound devices,Skimming and scanning,Skimming and scanning are two fast reading skills to help to browse text and extract the key points. The skills require practice, but once you have got the hang of them youll find you can get through a substantial amount o

2、f reading in quite a short time. These reading methods make it easier for you to grasp large amounts of material, especially when youre previewing. They are also useful when you dont need to know every word.,Reading strategy,skimming,scanning,a general idea,certain information,titles and headings,th

3、e first and last sentences of paragraphs,the first and last paragraphs,pictures and charts,Scan the text for key words and phrases, dates, etc.,Do not need to read the whole text.,Reading strategy,Understanding headings,appear before each section of a text show how a text is organized give an idea a

4、s to the contents of each section,Headings,Can you figure out how the text on Pages 2-3 is organized? (Skimming),TV (in order of time),Early history of TV The modern age: satellite TV,Sound & video recorders (in order of time),Early history of sound recorders Sound and video recorders Sound and vide

5、o go digital,The future,How this text is organized?,Skimming,The information in this article is organized _. A. by paragraphs B. in order of place C. by concepts D. by sub-topics,team work,Reading Comprehension I,Skimming,Scanning,Reading Comprehension II,1. Who developed the system used for most ea

6、rly TV broadcasts? John Logie Baird. 2. Who made the first recording of a human voice? Thomas Edison. 3. What were developed by the late 1960s? Portable cassette players and video recorders.,1. Colour TV became popular within just a few years after it was invented. 2. People without satellite dishes

7、 do not benefit at all from satellite TV broadcasts.,Reading Comprehension III,Scanning,3. Some of the first tape recorders used plastic tape to record on. 4. Records and cassettes do not offer as good a sound quality as CDs. 5. New technology will soon make many of the things talked about in the ar

8、ticle out of date.,Work out the timeline for the development of video and sound devices.,Reading Comprehension IV,Emile Berliner invented a record player that used discs to record on.,The first public TV broadcasts were made, in the USA.,Regular public broadcasting began in London.,The first colour

9、TV programme was broadcast.,Satellites were used to broadcast TV.,Regular colour TV broadcasts began in the UK.,The first CDs were made available.,The VCD was born.,The DVD was invented.,Undoubtedly, both TV and audio devices will play an increasingly important role in our future life. What other fu

10、nctions would you like them to have in the future?,TV,Do you think we may have a TV-wall in the future?,Consolidation,The evolution of video and sound devices,Early history of TV In 1925, the first public TV broadcasts were made in the USA. In 1928, the first long-distance TV broadcast was made.,Tel

11、evision,Many people made (1) _ to the development of TV. The years between 1928 and 1951 (2) _ the development of color TV.,The modern age: satellite TV In 1962, satellites were used to broadcast TV. People who live far away from cities have (3) _ to TV signals with the help of satellite dishes.,con

12、tributions,witnessed,access,Sound and video,Early history of sound recorders In 1877, Edison first (4) _ a human voice. Emile Berliner invented a record player using discs as (5) _ to tubes.,Sound and video recorders In 1928, the first tape recorders were made in Germany.,recorded,alternatives,In th

13、e early 1950s, tape recorders began using plastic tape instead of (6) _ or paper tape.,Sound and video go digital In 1982, the first CDs were made (7) _. In 1993, the VCD was born and the DVD was invented in (8) _.,steel,available,1995,The future Nowadays sound and video can be stored on a PC, on the Internet, or using some form of (9) _ storage. Technology is changing fast, and its future is (10) _ our imagination.,portable,beyond,Preview,To preview Word power about electronic and ele