介绍电脑的用途，字数80字左右。
范文1.Computers
It is known to us all that the computer is the most important invention in the 20th century. It has been developed a lot since it appeared. Also, our daily life has greatly changed because of it.
A computer can think and remember things like man, but it is millions of times faster than human begins. As a result, computers have been used in the fields of agriculture(农业), industry(工业), education(教育) and so on. For example, we can learn our lessons at home by using a computer instead of going to school.
Computers have entered our daily life. So it is important for us to learn how to use a computer. And we must start right now.
范文1.电脑
众所周知，电脑是第二十世纪最重要的发明。它已经发展了很多，因为它出现了。而且，我们的日常生活有了很大的变化，因为它。
一台电脑可以思考和记住像人一样的东西，但是它比人类的开始快了数百万倍。因此，计算机已经广泛应用在农业领域，行业，教育等。例如，我们可以在家里用电脑来学习我们的功课，而不是去上学。
计算机已进入我们的日常生活。因此，学习如何使用计算机是非常重要的。现在我们必须开始。
范文2：Computers
The computer is a wonderful machine. They are already widely used in industries and in universities. They are used in many ways.
Computers can do many kinds of work. For example, computers can helps us do maths problems quickly. Some problems are too hard for us to work them out, but computers can. A scientist can ask computers some questions, and the computers can answer on the screen.
In a car-factory computer tells the robots how to do with the cars.
Computers are very useful. So many parents buy computers for their children. They hope computers can help them improve their studies in school, but some children dont do as what parents want them to do. Because they used the computers for surfing on the Internet and spend too much time playing computer games instead of learning. It does not good for their eyesight. So their parents complain about computers not help children to study but also make them fall behind.
In many companies computers instead of workers to work. So many people lose their jobs. So many workers think computers bring them a lot of trouble.
If computers are good for us or bad for us its hard to say so I hope computers will be used in the right way.
范文2：电脑
电脑是一台好机器。他们已经广泛地应用于工业和大学中。他们用在很多方面。
计算机可以做许多种工作。例如，电脑可以帮助我们快速地做数学题。有些问题对我们来说太难了，但是计算机可以。科学家可以提出一些问题，计算机可以在屏幕上回答。
在一家汽车厂里，计算机告诉机器人如何使用汽车。
计算机是非常有用的。许多家长为孩子买电脑。他们希望计算机能帮助他们提高他们在学校的学业，但有些孩子不做家长想做的。因为他们使用电脑上网，花了太多的时间玩电脑游戏，而不是学习。对他们的视力不好。所以他们的父母抱怨电脑不能帮助孩子学习，但也使他们落后了。
在许多公司，计算机代替工人工作。许多人失去工作。许多工人认为电脑给他们带来了很多麻烦。
如果电脑对我们好或坏，对我们来说很难，所以我希望计算机将用在正确的方式。