关于计算机的用途外观等用途写篇英语短文

The invention of computers is one of the greatest humankind's inventions.The computer generally consists of keyboard、mouse、screen、monitor.
First of all,every company nowadays uses a computer to store its data and make different kinds of operations.
Secondly,computers provided a great means of communication - the Internet.
Finally,in addition to these practical benefits people can go shopping without leaving their houses.
In sum,coumpters are our friends if we use them effectively.
希望能够帮助到您.