Write a composition related to modern science and technology. More than 400 words.

In retrospect, people use few electrical appliances in their lives, only those radios and black-and-white TVs. Nowadays, with the development of science and technology, every family has at least one color TV, refrigerator, electric light, tape recorder, and some families also have microwave ovens, mobile phones and even computers. There are countless electrical appliances and high technology in the homes of those celebrities! Among so many electrical appliances, I think the most popular one is the computer.

Speaking of computers, many children will say I like them. The reason is that it can play games Many parents will say that computers delay learning.

Actually speaking, computer is a good learning tool. When you need some information to enrich your knowledge, you don't have to go to the library to read many books, which will waste a lot of time. You can sit in front of the computer and knock on the keyboard, and you will find relevant information in a short time. This not only saves time, but also ensures that you can successfully complete the task.

Not only that, the computer is a good partner for your leisure time. When you are free, you can sit in front of the computer, play your favorite video games, or log on to the Internet and talk freely with netizens from all over the world. Is this not good?

However, many children have no good control. Besides going to school, they spend their spare time playing computer or chatting online. Many adults are also angry because they are afraid of delaying their children's academic performance.

In this way, computers have been condemned by adults, but they are very popular with children. To this end, many families have paid a huge price.

This is the joy and worry brought by modern science and technology. They bring convenience to people, but at the same time they also bring contradictions to people. Here, I want to tell everyone: "The development of science and technology is to better help the progress of mankind and the development of the country, not to help people kill time. At the same time, I hope that no matter what you do, you must grasp the discretion, don't care too much about its existence, and don't ignore its existence. "