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Charles Babbage: Father of the Computer

Charles Babbage hoped to invent a calculator. But the technology of his time was too simple. Babbage could not make his dream come true.

All his life, Baggage was interested in n【小题1】. For example, he could find out how f【小题2】 a pig’s heart beats or make a table to calculate how much wood a man could saw (锯) in 10 hours.

Baggage was also an inventor. Around 1830, he decided to d【小题3】 and build a machine for doing simple mathematical calculations. He called this machine the Difference Engine.

Making the machine

The Difference Engine was very big and difficult to make. It was made of two tons of steel and gears (齿轮) . While he was building this h【小题4】 machine, he had an idea for a new machine. This one would do all kinds of calculations. He called it the Analytical Engine. It was the start of the modern computer. But Babbage used up all his money b【小题5】 he could complete either machine.

Re-inventing the Engine

In 1854, two Swedish inventors built a working mechanical calculator. It was b【小题6】 on the Difference Engine. This machine was able to print out different kinds of forms and tables. It was very accurate.

Babbage was the first person to come up with the idea of computers. And he is more famous today than he w【小题7】 in his day.

22-23七年级下·上海·单元测试
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Sometimes we forget that many things we use every day were not always there. They had to be i【小题1】. Someone had to have an idea. Then they had to do a lot of experiments with the idea until it worked well. Here are few you might like to read about:

In Maine, the northeast of the U. S., winters are long, windy and cold. Every winter, Chester Greenwood's ears got so cold that they turned colors. When he was 15, Chester got ice skates for his birthday. He wanted to go skating. The cold wind and his frozen ears soon sent him running home. The next day, Chester tied a scarf around his ears. It was w【小题2】, but too uncomfortable. Then he got a GREAT IDEA.

Chester made two oval loops out of wire. He asked his grandmother to sew covers on the ovals Then she connected the ovals with another wire. The ovals fit over his ears. Chester had invented earmuffs! They saved his ears and made him rich. People in Maine found another way to r【小题3】 Chester. December 21th, the first of winter, is Chester Greenwood Day.

Sometimes inventions happen by chance. As a boy. Thomas Alva Edison was called Al. When he was 12 years old, he got his first j【小题4】. He sold newspapers and candies on the train. One day on the job, he bravely s【小题5】 a boy from being run over by a train. The boy's father worked a telegraph. Al asked how to run a telegraph. Not only did Al learn the telegraph, but he made a better one. It was one of his earliest GREAT IDEAS


Edison's new telegraph made a lot of money. Later,he became the first person to o【小题6】and run an invention business. He was good at that,too. We could thank Thomas Edison every day. He had many,many GREAT IDEAS such as bulbs,movie cameras,and batteries. Edison is the one who invented more things than a【小题7】else in the world.

So,who knows?You might invent something some day!

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