Nowadays, our commonplace life are a leap into the E-world age, Ipad and portable computer can take place anywhere, whether bus station or subway, we can found  various E-productions. They are played an indispensable role in our life. And they also make our life more convenient and easier.
  Firstly, computers save the massive time for us. For example, when we have no time to go to the ticket station in business, more and more people choose the way that used the computer subscribe the train tickets and musical concert tickets. We also shopping online, such as buying books and clothes, on the line, the price of the tickets and other things are always discount. And we are satisfied its high speed way and graceful attitude. Secondly, computer let us study easier and interesting. In the computer market, many orders could be downloaded for free and provided different courses. Computer involve the calculator that  help us process the huge number of data  and store function that store the massive information as well as paining and learning the different courses through long-range.
  Admittedly, computer will have the negative effect on us. For one thing, for the most people that they must sit by the computer desk deal with their work day and night, and constantly repeat the one movement, as a result, fingertip and bow will pain, especially in the morning when they get up, and their eyes will injury. For another thing, some students are immersed in the computer games, leading their school work delay and sleeping on the class. In the conclusion, computer leaded us into a new world. If we used the computer in the suitable cases, and choose the right time to play, also assure the sleeping time. Computer will have life more useful and interesting.