The computers is proved to have some particular drawbacks. First, the computer can make people health become worse. If someone uses the computer in a long period of time, they are likely to get dizzy and sleepy. Also, with the fact that such people do not do exercise regularly or eat unhealthily, they are likely to get shortsighted, obesity or be at risk of getting diabetes and high blood pressure, which can seriously harm their bodies. Second, the computer can be a tool for students to cheat. With a computer connected to the Internet are students able to find the cue for their tests or post the exercise to some webs to search for help. Last but not least, the computer may be dangerous as they can be hacked by IT terrorists. In fact, many companies lost their important information by being hacked and asked for money to receive back it. In short, these are among the specific drawbacks of the computer.