课件31张PPT。Unit 3 ComputersHeavy!
Difficult!
Hard!
Tired!keyboardmousemonitorscreenspeaker host computercamera What do they have in common?an abacusa calculatora desktopa notebook computer
a laptopdigital camera a robot(What do they have in common?)I think that…
In my opinion…
I 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.
4.They are useful and helpful.Discussionwork for us in Mars(火星)What’s next?carry thingswork in wars (战斗)仿真机器人entertainment
娱乐What do you think will be the next development?CD -- DVD-ROM
---DVD RWCRT monitorLCD monitorCPUhard discchips
/motherboardsome hardware:使用阴极射线管(Cathode Ray Tube)的显示器?Liquid?Crystal?Display?keyboardmousemodemscannerprinterspeakerfloppy disc/diskUSB flash discCD/VCD/DVDMP3 playerMP4 playerMemory:(存储器)移动硬盘USB
Flash disc 1 TB 固态硬盘T
硬盘Hard disc:Core 2 Duo 酷睿2 : 4核龙芯8核cpu:other useful words and expressions about computer:Network网络
Virus 病毒
Download 下载
Up load 上传
Program 程序
Website 站点
Hacker 黑客Home page 主页
Password 密码
Desk top 桌面
User name 用户名
Click 点击
Software 软件
Hardware 硬件
Home page 主页Reading:
Who am I?Skimming:
Read and answer these questions:2. Who was the first person to invent the earliest computer?
3. Who was the next important person to design computers?
Charles BabbageAlan Turing1. Who am I?A computer.timeline
1642:
1822:
1936:
1940s:
1960s:
1970s:
Now: Scanning:The computer began as a calculating machine. the Analytical Machine was built by Charles Babbage.The computer grew rapidly both in size and in brainpower.Computer had grown as large as a room.Computers were used in officers and homes.Computers connect people all over the world together.the first family of computers was connected to each other The history of
computersthe second generation
(1956-1963)the third generation
(1964-1971)the fourth generation
(1971- )The first generation
(1945-1956)The development of computers:Calculating machineAnalytical machineUniversal machineArtificial intelligenceComputerInternet计算器分析机万能机,通用机器人工智能calculatinganalytical universal mathematical
problemsMedical operations MemoryTransistorsApplicationsCommunicationTradeIntensive reading:
Underline the phrases &sentences that you think are importantStar sentences:P1 L2 I _______instructions from cards with holes.
P1 5 Earlier I was not very big, but then I became ______ .
P1 L6 However, people thought I was ___________ until they _________ I had “artificial intelligence.”
我执行穿孔卡的指令早些时候我并不是很大,但是后来我变得非常大可是,人们认为我头脑简单, 直到发现我有人工智能时,他们才不那么想了。followedhugesimple-mindeddiscoveredP1 L8 As the years have ________, I have been made smaller and smaller.
P2 L1 There were ______ when my size was ________changed.
P2 L3 But I was always so lonely _______ there by myself, until in the early 1960s,they gave me a family ________ by a network.随着岁月的流逝, 我被做得越来越小了.有段时期我的体积完全变了但是我总是孤孤单单地站在那里,直到60年代初, 人们才
给了我一个用网络连接的家庭。gone bytimestotally standingconnectedAdvantages and disadvantages of the computers. Discussion advantages
we can
communicate with friends
listen to the music
see films & watch news
play games
do shopping
save a lot of time
do a lot of useful things Disadvantages
Some people especially the teenagers abandon (沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study .
Some people use the computer wrongly. HomeworkReview the text
Recite Para one
Finish Ex. 1/2 on Page 20.