we can use computer to doing sth(What)?

Computers play an important role in the modern world. Today they are used in many areas of human activities, such as business, industry, science, and education. The development of computers has also created many attractive job opportunities. I'm a college student majoring in mathematics and as such I know quite well the powers of the computer. They have evolved as a natural consequence of man’s growing need for fast and accurate calculation. To make myself better equipped in my field of study I have learned several computer languages to communicate with the computer. My experience tells me that if we want to become competent users of the computer we must keep up with its development. Because modern industrialized society need computers to perform a wide range of tasks, I think a general knowledge of such wonderful machines is quite necessary for most of us.