unit3computerspptPPT课件

1、Look at the following pictures and tell their English names.abacuscalculator第1页/共24页huge computer PCpersonal computer第2页/共24页laptopPDA Personal Digital Assistant第3页/共24页robot第4页/共24页Can you tell the development of computers?abacuscalculatorhuge computerPClaptopPDArobot第5页/共24页Do you know in what way

2、s computers are used today? 第6页/共24页search for informationwatch movies第7页/共24页listen to musicread books and magazines第8页/共24页buy things onlineplay games on the computer第9页/共24页Reading Who am I?第10页/共24页第11页/共24页Para I:Para II:Para III: Who am I?Over time I have been changed quite a lot.These changes

3、 only became possible as my memory improved.Since the 1970s many new applications have been found out for me.Skim the passage and find out the topic sentence in each paragraph. 第12页/共24页Do you know the main idea of this passage? A. The development of computers. B. A machine which is simple-minded. C

4、. The development and the applications of computers. D. Computers may replace human beings.第13页/共24页Paragraph 1Paragraph 2Paragraph 3Topic sentenceOver time I have been changed quite a lot.These changes only became possible as my memory improved.Since the 1970s many new applications have been found

5、for me.Complete the chart below.第14页/共24页Supporting details（find out some key words）Calculating machineAnalytical machine Universal machinePersonal computerlaptopTubesTransistorsChipsNetworkWorld Wide WebCommunicationsFinanceTradeRobotsMobile phonesMedical operationsSpace rocketsProviding a life of

6、high qualityParagraph 1Paragraph 2Paragraph 3第15页/共24页Read para 1 and fill in the chart. Time Machine ApplicationsIn 1642A _machine_difficult sumsAbout in _ An analytical machineThink_In 1936A _machineSolve any difficult problemBy the 1940sA larger machine_worried the designers_Personal computer/Lap

7、top _calculatingSimplify1842logicallyuniversalRealitySince the 1970sUsed in offices and homes第16页/共24页1. My shape didnt change even though my memory improved.2. The older I am, the larger I have become.3. Over time I have large memory so that I will not forget anything I have been told.4. I was able

8、 to share my knowledge with others through the World Wide Web in the early 1960s.FFTTThe information was stored in tubes, then on transistors and later on the chips.As I have grown older I have also grown smaller.Read para 2 and then tell the statement true or false. 第17页/共24页12What roles do compute

9、rs play in the life of human beings?What are the new applications of the computer?Read Para 3 and then answer the following questions. 第18页/共24页What are the new applications of the computer?communicationtrademedical operation space rocketsrobotsmobile phonesfinance第19页/共24页What roles do computers pl

10、ay in the life of human beings?They provide humans with a life of high quality.They are devoted friends and helpers of the human race.第20页/共24页 I began as a _ _ in 1642 in France. In 1842 I was built as an _ _. Then in 1936 Alan Turing wrote a book and built a _ _. As time_ _, I was made _ but my me

11、mory got _ and _. In the 1960s they gave me a family connected by_ _. Now people call it the Internet. I was used in _ and _ in the 1970s. Since my birth I have truly been built to serve the human race.calculating machineanalytical machineuniversal machinewent bysmaller largerlarger a networkoffices

12、homesRetell the passage.Retell the passage. 第21页/共24页 ConclusionConclusionThere is no doubt that the computer has two sides ,too. If we make good use of it, it will make our lives more colorful and convenient. But dont lose yourself in playing computers. Just remember: Keep fit and study hard.第22页/共24页 Homework Write a short passage about the development of the mobile phone.1.1.19731973年，世界上出现第一部移动电话。（mobile mobile phonephone）2.2.19851985年，第一台现代意义上的移动电话