高一英语必修2Unit3-computers-warming-up课件

1、warming-up and readingThe technology develops so quickly that many new things appear in human beings life.Lets guess what they are:guessing game I am very old now. I was born in China. Many people used me for calculating(计算) in the past, but now I am a bit lonely because they dont like me now. Do yo

2、u know who I am?abacus bks Guess : I am very small. I can be used for calculating. In China, a lot of students use me when solving mathematical(数学的) problems. Do you know who I am?Calculator klkjuleit Solve a riddle : one thingIt has a big face with many keysIt has two big ears which can play musicY

3、ou can watch TV or see a movie using itIt can be seen in the office, classroom and at home.It can download informationguessDo you know who I am ? A huge computer “银河”巨型计算机A PC= personal computer A notebook computer We can see many brands of computersLenovo 联想Haier 海尔神州Tinghuatongfang清华同方惠普HP(Hewlett

4、 Packard) DellTCLAcer宏基thinking1. What do they have in common? （Using some of the following expressions in your discussion.） I think that In my opinionI believe that What s your reason?Why do you think so? 1.They can be used for calculating. 2.They can deal with maths problems.3.They are our friends

5、.4.They are useful and helpful. What makes up the computer? And can you name each part ?GPU/显卡Hard diskMain board/主板CPU/处理器(Central processing unit)NIC/内存mouseKey-boardSound boxscreenheadphone. Read through the words in the box. Use some of them to name each part of a computer in the box. Monitor mo

6、use keyboard hard disc floppy disc CD-ROM printer scanner modem Chips CPU floppy discchipsmonitormodemCD-ROMscannerkeyboardprinter1 A monitor is2 The screen is3 A keyboard is4 A mouse is5 A CD-ROM is6 A hard disk is (a) the part of a computer that stores information.(b) the part of the computer that

7、 you type on.(c) the part of the computer that looks like a television(d) something you use to click on things (files, etc.).(e) the part of the monitor that you look at.(f) The main device that a computer uses to store information.Match the words with their meanings.Reading ?Who Am IUnit 3 Computer

8、Reading Scan the text and then answer the following questions: 1.Who is the speaker? 2.What the text might be about?Scanning 1.Who is the speaker ?It is a computer.This reading passage is mainly about the and the of the computer.historydevelopmentFind out three sentences to support who the speaker i

9、s in the story.1.Then in 1822 I was built . (Itself was the first design of a computer)2.My real father was Alan Turing.(He designed the first real computer.)3.However, people thought I was simple-minded until., (It has artificial intelligence.) 1.Where were you in 1642?3 What were you called in 193

10、6?4 What did you get in the 1960s?What happened to you in the 1970s? 2 What happened to you in 1822?Timeline 1642: _: The Analytical Machine was Made by Charles Babbage.1936:_1960s:_ The computer began as a calculating machine in France.1822Alan Turing wrote a book to describe how computers could be

11、 made to work.Computers have new transistors and became smaller._: The first family of computerswas connected to each other.1970s: _Now:_1960sComputers were brought into peoples homes.Computers connect people all over the world together. True or false 1. Charles Babbage was the computers real father

12、. 2. The speaker was built as an Analytical Machine in 1822. 3. The speaker was called a calculating machine in 1936. 4. The speaker was given a family connected by a network in the late 1960s. F Alan Turing. T a universal machine in the early 1960s F F Q1: How did the computer work as an Analytical

13、 Machine? The computer followed instructions from cards with holes.Q2: In which way did computers talk to humans? Using BASIC.Q3: What does “others” (2.6) refer to? Other computers.3. Questions Q4: Why did people think the computer was simple-minded? Because the computer was made as a calculating ma

14、chine and was used to solve mathematical problems.Q5: In how many ways do we say the computer changed? What are they? Size: Intelligence: Speed: Function: People opinion:smallerquickercleverercalculating-dealing with , communicating withsimple-minded-clever & usefula personal computera calculating m

15、achinean analytical machinea notebook computera huge computer12345Changes in size 1._ (earlier) 2._ ( in the past) 3._ (modern)not very bighugesmaller and thinnerChanges of the machineCalculating machineAnalytical machineUniversal machineartificial intelligencePC (desktop/ notebook)Internet ?TimeDev

16、elopment in functionscalculatecalculating machine -Analytical Machine -follow instructionsuniversal machine- solve mathematical problems; artificial intelligenceComputer connected by a networkshare information with others; talk to each other; deal with information; communicate with each otherDiscuss

17、ion: what other functions will computers have in the future? Or what will computers be like?Use the following expressions:I think that In my opinion I believe thatIt would be nice ifricher and richer; stronger and stronger; easier and easierThen what should we do if we want to develop more functions

18、 of the computer?Study hard. Learn as much knowledge as we can.Prepare to become great scientists! Summary The history of computersName : computer Born : (time)_ (place)_ My father: _My size: 1._(earlier) 2._( in the past) 3._(modern)My history: 1. 1642 _machine 2. 1822_machine 3. 1936 _machine 4. 1

19、960s computers with _ 5. 1970s _ and _ computers.My usage: 1. _ 2._ 3._ Who am I 1642France Alan Turingnot very bighugesmaller and thinnerAnalytical calculatinguniversaltransistorsPCnotebookshare municate with others.serve the human race. Now people can use computers to deal with information and com

20、municate with each other around the world by _ . But the development of computers has a long history. In 1642, the first computer only worked as a _ . In 1822, an Analytical Machine was invented. In 1936 ,a machine was built. In _ ,after getting new computers became _ in size, got cleverer and cleve

21、rer in intelligence, and became_ in speed. Then they could be connected with other computers by a network, and _ could talk to them using BASIC. In the 1970s ,people began to bring them into their homes. Summary the Internetcalculating machinethe 1960ssmaller and smallerquicker and quickerhumansuniv

22、ersaltransistors,People say computers have more advantages than disadvantages. Do you think so?advantagesdisadvantagesABSuch as :Send an e-mailIt is bad for your eyes How do you use the computers in daily life？ (1). play computer games(2). QQ（chat on line）(3). send emails to friends(4). download mus

23、ic and films(5). search for information (6). do business or work(7). use computer for school work(8). look at photographs Think: Which is the most important?Dont spend too much time playing games!Download(下载) informationSee a movie or watch TVPlay computer gamesBuy goods you want Do some chattingadvantages- - - - - - - improve peoples ability of thinking Too exp