(
课件网) Unit 3 Our digital lives 主题范畴：人与社会 主题群：科学与技术 子主题： 科学技术与工程，人类发明与创新 Key question How has digital technology changed our lives learn about the history of computer technology development and the story of tech talent Alan Turing. recognize and understand the usage of key words, phrases and sentence patterns in the passage. learn the text features of popular science articles/expository essays, and predict the structure and content of the reading passage. Learning objectives 学习目标 At the end of the class, I will be able to: basis / be s s/ microprocessor / ma kr pr ses (r)/ microchip / ma kr t p/ major / me d (r)/ breakthrough / bre kθru / electronic / lek tr n k/ n. 基础 n. 微处理器 n. 微芯片；芯片 adj. 主要的；重要的 n. 突破；重大进展 adj. 电子的 New words and phrase software / s ftwe (r)/ app / p/ era / r / download / da n l d/ tiny / ta ni/ the general public n. 软件 n. （application的缩写） 应用程序；应用软件 n. 时代；纪元 v. 下载 adj. 微小的 公众；大众 It is the most useful tool in our life. We can calculate, type, and draw things with puters can also do some important jobs. They can operate railways and fly planes and spaceships. Do you think computers are useful Can you give some examples Warming up Calculate. Play games. Type. Fly planes. Look&say What can we do with computers How has digital technology changed the world Computer technology develops quickly and has changed our world greatly. Let’s explore the history of computers. 计算机技术发展迅速，极大地改变了我们的世界。让我们来探索计算机的历史。 Pre-reading Read the text to find out how computers have developed over the years. The story of the computer 1837 In Britain, the first machine with a program was designed by Charles Babbage and his student Ada Lovelace. Charles wanted a machine to add up big numbers, but Ada realized that a computer program could do a lot more. She was the first computer programmer. A computer is any machine that can be programmed with a set of instructions. While-reading 1936 British scientist Alan Turing read Ada’s ideas and created the Turing machine, the basic design of a computer system. The Turing machine could do all kinds of calculations, and it could also run different programs. This is the basis for all modern computers. 1940s Scientists built early computers in England and Germany. They were the size of a room! 1971 Ted Hoff was the main inventor of the microprocessor, or “microchip”. This was a major breakthrough in the history of computers. Thanks to the microchip, computers and other electronic devices got faster and smaller very quickly. 1981 A US company designed the first PC (personal computer) for the general public. Experts didn’t believe that anybody wanted a computer at home. But in two years they sold thousands of them. 1990s—present Smartphones—phones with computer software—arrived! Today’s smartphones can connect to the interne ... ...
