介绍计算机英语作文

Mr. Smith, it is a notice to the audience. It says that we should enter the concert hall 30 minutes earlier before the concert starts. Entrance to the hall is by ticket only, one person one ticket. As a rule, food or drink should not be taken into the hall. Of course , smoking is not allowed in the hall, either. Please don't bring your digital camera with you because no photos should be taken during the concert. And what is more, mobile phones must be kept off during the concert.
Βιβλιοθήκη Baidu
Computers are becoming more and more important in our daily life. Do you know the history and the changes of computers? Computer was invented in 1946. At that time ,the machine was huge and it was as large as a big house. It weighed about 30 tons. Computer is a very useful tool in our life, in our study as well as works. For example, we can use computers to send some messages to foreign friends by email. Computers can open our eyes and let us know more. It is the most helpful invention in the world. We can listen to music or play games on computers. It's hard to imagine what our life would be like if we had no computers in our daily life. And in my opinion, computers are going to change our life completely in the near future.