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instrument painter engineer code backwards |
How would you use a radio or a telephone if you had no electricity or batteries? These1bothered (使烦恼) British inventor Trevor Baylis. So in 1996 he2a windup (装有发条的) radio. It doesn't need electricity or batteries. You wind it up3hand. It plays for about an hour. Then, you wind it up4. Today it's made in South Africa.
Then in 1999, Baylis invented a mobile telephone that is powered by5. The shoes contain( 含有)! a small battery that is powered when you6. This battery is connected to a mobile phone. These two simple inventions can bring modern7to all parts of the world.
Baylis doesn't have a university degree in engineering. In8,he left school before graduating(毕业). He just loves9things to help people. He never knows10ideas will come to him. The idea for the telephone came to him in a dream.
Man has made many interesting inventions since the beginning of time. Some of these inventions like numbers, words and radios have certainly changed history.
One of the most important inventions is the computer. It has changed all of our lives.
People built the first computer at Harvard University in 1944. It was as large as a room and quite difficult and slow to operate. But since the invention of the silicon chip (硅片) ,computers have become smaller, easier to use, and faster to operate. Some computers are as small as TV sets. People can make computers smaller than books. And computers are getting smaller and smaller all the time.
The computer can do a lot of work. It is very useful to us. Firstly, it can keep a lot of news and messages. Secondly, the computer can operate very fast- thousands of times faster than a man, and it won't be tired. Thirdly, people can build computers into other kinds of machines, like radios, cars and planes.
Now, almost everyone uses some kinds of computers. This invention has brought great changes to all of our lives.
