Computer plays an important role in this technology era. It can't be denied that computer brings certain advantages, but this high-tech device has its own limitations.
First of all, computer has become a useful tool and an intelligent device in every aspect of life. For example, thanks to Computer and Internet, studying has no hurdles, because Internet is an unlimited source of information and knowledge. What is more, computer and Internet is a great means of communication. Distance is no longer a matter of concern when we can send mails within a few seconds or make cheap internet phone call. We can use computer whenever and wherever we can. That is to say computer has made our life become modern, more convenient and civilized.
However, it has its own disadvantages. The troubles, however, do not stem from computer or the Internet themselves but the users. The new technology is entirely positive but the users take its advantage for negative purposes. Some people use computers to do nothing but play games, chitchat, spam, create dirty information on the Net. They directly or indirectly detract Internet from its benefits to the community. Many people are scared of using Internet because of their fear of being abused, or spamed, or becoming Internet addicts. In addition, sitting in front of the screen for long hours can lead to obesity, backache, and short-sightedness. Besides, people paying too much attention to online activities may become passive, sluggish in real life because of their lacks of communication, and manual labor.
In short, everything has its two sides, so does computer and Internet. Therefore, it is necessary that we use it for right purposes.