Unit 3 computers reading Sun qihua.

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Presentation transcript:

Unit 3 computers reading Sun qihua

Solve a riddle : one thing Pre-reading Solve a riddle : one thing It has a big face guess With many keys Download information Two big ears which can play music You can watch TV or see a movie using it It can be seen in the office, classroom and at home.

We can see many brands of computers Haier 海尔 Lenovo 联想惠普神州 Dell Tinghuatongfang清华同方 Acer宏基 TCL

(Central processing unit) What makes up the computer? And can you name each part ? NIC/内存 CPU/处理器 (Central processing unit) screen Main board/主板 mouse Sound box Key-board headphone GPU/显卡 Hard disk

Do you like it? Who am I ?

3.Who was your real father? First-reading 1.Where were you in 1642? 2.What happened to you in 1822? 3.Who was your real father? 4.What happened to you in the 1970s?

1.Where were you in 1642? In France

I was built as an analytical machine by Charles Babbage 2.What happened to you in 1822? I was built as an analytical machine by Charles Babbage

3.Who was your real father? Alan Turing

I was brought into People’s homes. 4.What happened to you in the 1970s? I was brought into People’s homes.

second-reading Timeline calculating machine: analytical machine 1642 1936 1960s 1970s Now calculating machine: analytical machine Alan Turing wrote a book to describe …… had new transistors, smaller, connected people’s home connect all over the world

B F A D C E The order : Third-reading The development of computers technology F. analytical machine A. universal machine D. artificial intelligence B. calculating machine E. Internet C. PC (desktop/notebook) The order : B F A D C E

People say computers have more advantages than disadvantages People say computers have more advantages than disadvantages. Do you think so? A B advantages disadvantages It is bad for your eyes Such as : Send an e-mail

Download(下载) information improve people's ability of thinking advantages Download(下载) information See a movie or watch TV Play computer games Buy goods you want Do some chatting improve people's ability of thinking - - - - - - -

Addictive to play computer games disadvantages Too expensive Addictive to play computer games Virtual things (虚拟的) People can not write right Chinese letters - - - - - - -

Summary writing

1.Should students surf the Internet? 2.Should students Homework 1.Should students surf the Internet? net bar 2.Should students go to the net bar? at home

Bye-bye!