What advantages and disadvantages have computers brought to people?

What advantages and disadvantages have computers brought to people? Benefits: broaden your horizons, understand knowledge, entertain games and look up information. Disadvantages: eye injury, large radiation, power consumption, wasting time, affecting study, brain injury, body injury ... Anyway, the disadvantages far outweigh the benefits.

What benefits does the computer bring to people? The benefits of computers:

Computers are widely used, convenient and fast, and are well received by people.

For example, it is convenient for us to collect information.

When we want to do a special project, but lack information, as long as we surf the internet,

You can find a lot of information related to the project immediately, which is very convenient.

Students' language ability can be improved by computers. Now there is a "one a day" reading plan on the Internet. We only need five to ten minutes every day to read a high-quality article and finish after-school exercises.

If this goes on, our Chinese level will certainly be greatly improved over time. If students encounter something they don't understand in their homework, as soon as they get online, someone will solve the problem for us.

Computers can let us know a lot of extra-curricular knowledge, and teachers let us query information. If there are no books, we can use the computer, which is convenient and practical.

For example, shopping, booking air tickets, etc. can be ordered by computer now.

You can also make slides. Blog computers can also control production, transmit information and so on.

First, the current situation of middle school students using computers: In today's society, the development of computers is advancing by leaps and bounds. Almost every family in the city has a computer, and we can't live without it. We are called the "new generation".

An indispensable part of study and life is the computer.

Through the investigation of students around us, our project team members believe that middle school students use computers mainly for the following purposes:

Used for learning (including drawing and writing), playing games (including listening to music and watching movies) and surfing the Internet.

The main uses of surfing the Internet are: online learning, searching for information, playing games (including listening to music and watching movies), chatting and making friends.

According to statistics, playing games accounts for the largest proportion, almost reaching more than 60%.

Second, the positive role of computers in the growth and progress of middle school students;

At present, it is very common for middle school students to use computers, but there are advantages and disadvantages. Computers are easily accepted by our middle school students. Its advantages,

Mainly as follows:

1 is an important way to master all kinds of knowledge quickly. Computers have become an important source of knowledge.

Most of the materials of the world's major libraries can be obtained online through computers, which is not only quick to consult, but also saves a lot of extra expenses.

There are also news, materials, entertainment, literature and other information. Through the computer, we can see the latest, fastest and most authoritative news on the Internet, learn knowledge that books don't have, and learn a wider range of unknown information, so that more middle school students can get close to the forefront of science and technology faster and earlier, and let us love and admire science more.

2. Effective ways to receive education The current learning software is dazzling and much more interesting and flexible than books. Just like watching cartoons, it is easy to attract our attention.

A few thick encyclopedias of Britannica and a small CD can do it. There is also a new teaching method of "online school", where teachers teach you individually and "classmates" learn from each other in communication, completely getting rid of the shackles of face-to-face with teachers in class and being free from the constraints of time and place, which is of great help to our middle school students to play freely.

Computer is a useful tool to strengthen communication. Nowadays, almost all middle school students are only children. Except at school, I usually spend more time alone. I can surf the computer and chat in chat rooms or OICQ and other communication websites. In this virtual world,

They are talking about their favorite topics. Netizens, regardless of age and occupation, can express their feelings as long as they think they are like-minded. This is an excellent opportunity for us who are eager for friends, friendship and talk. We had a good chat on the Internet and got spiritual relaxation and relief.

Disadvantages of computer ..

1, computer radiation pollution will affect the circulatory system, immunity, reproduction and metabolic functions of human body, seriously induce cancer and accelerate the proliferation of cancer cells in human body.

2. The cardiovascular system affecting people is characterized by palpitation, insomnia, menstrual disorder, bradycardia, decreased cardiac blood volume, irregular sinus heart rate, leukopenia and decreased immune function of some women.

4. It has a bad influence on people's visual system. Because eyes belong to the sensitive organs of human body to electromagnetic radiation, excessive electromagnetic radiation pollution will also affect the visual system. Mainly manifested as decreased vision, causing cataracts and so on.

In fact, the quality of the computer is absolute, just as we have learned in physics, absolutely static objects do not exist. Similarly, the quality of computers is relative. If we are good at using it in a good way, then the home computer is obviously good for everyone. But on the contrary, if you are not good at using it, or even use it to do some bad things, then naturally, computers are not good for everyone. So I think the advantages and disadvantages of computers that we have repeatedly discussed are relative. Therefore, the computer is neutral, there is no difference between good and bad, it depends on how you use it.

What are the advantages and disadvantages that cars bring to people? Advantages: faster running, closer distance, developed industry and more convenient going out. Disadvantages: less exercise, more exhaust, traffic jams, car accidents, greater dependence on energy, can only think of so much.

What advantages and disadvantages does technology bring to people's lives?

1 promotes people's mode of production, lifestyle and way of thinking.

It promotes the development of productive forces, improves people's material and spiritual living conditions and improves people's quality of life.

3. Accelerate the pace of social life and change people's ways of work and rest, communication, study, consumption and entertainment.

Enter the information age. It provides a means to process, store and transmit information, which brings convenience to study and work.

Modern means of transportation and communication make the earth smaller, and people communicate conveniently and quickly.

At the same time, it will promote the development of the tertiary industry and the socialization of family functions, and part of the early education and housework originally undertaken by the family will be separated and undertaken by the society.

The application of electronic computers enables human beings to engage in spiritual production and creative activities in science, art, culture and education instead of the production of material materials needed by human beings.

With the improvement of labor productivity, people can develop in an all-round way and move towards the highest ideal!

Disadvantages:

First, it consumes a lot of resources, intensifies the pressure of resource shortage, destroys ecology and environment, and brings air pollution to mankind. These are the most direct and obvious disadvantages.

Second, species extinction is accelerating, which is caused by environmental pollution and human hunting, and also belongs to the disadvantages of scientific and technological development.

Third, personal safety is increasingly insecure. Now there are tens of thousands of crimes every day on average, and their criminal methods are related to the new technology in Otawa, especially gun crimes, which make ordinary people hard to prevent. As can be seen from the Second World War, with the development of science and technology, the damage and losses caused by the current war are far from being comparable, and may even lead to the fate of human extinction.

Fourth, people's physical fitness is not as good as before. With the development of science and technology, the emergence of vehicles such as air cars, trains and planes has greatly changed human daily life. Humans no longer always rely on their own legs, so the physical quality of human beings can't be compared with before. In today's society, Xiang Yu can't "pull out mountains and rivers" as in the past, but if this situation continues to develop, it may shrink people's limbs and bring about new forms of human beings.

Fifth, all kinds of emerging germs appear constantly, and the lethality of many germs has far exceeded the destructive power of previous germs. This is because the rapid development of medical science and technology has accelerated the mutation of virus, so that the development speed of science and technology can't keep up with the mutation speed of virus, and maybe one day mankind will perish in a great plague.

What are the advantages and disadvantages of electricity? Needless to say, there is no need for electrical appliances now. Disadvantages, as long as it destroys the environment and the body's own biological clock.

Benefits:

1, electricity is the most efficient energy source, the most convenient energy source and the cleanest and pollution-free energy source. We know household appliances best, as well as refrigerators, televisions and washing machines. Can be placed at will.

2. Electricity is the most convenient energy source (hundreds of kilometers, thousands of kilometers), which can be completed with a few cables and several transmission substations.

3. Electricity is the most convenient energy source for energy conversion (thermal energy, magnetic energy and chemical energy).

Electricity (direct current) is the easiest energy to store.

Disadvantages:

Improper use will cause loss of people and property (sometimes huge). For example, high voltage electricity can cause injury or even death. Lightning is extremely destructive when it discharges between clouds and the earth. Static electricity sometimes brings great losses and disasters to people, equipment and society.

What benefits does science bring to people? The benefits that science brings to people: 1, the renewal of aircraft, ships, cars and other means of transportation provides us with protection and greatly liberates the productive forces.

Mobile phones make our communication more convenient, and the network provides us with unlimited information.

Electricity and nuclear energy provide us with "necessities" of life.

4. How to combine multimedia technology, hypertext technology, hypermedia technology and virtual reality technology perfectly is helpful to improve the efficiency of school teaching, which needs a lot of research and exploration, but the general trend is that it will greatly benefit school teaching, strengthen the effect of school teaching, provide a more humanized interface, provide whole-course teaching content and provide lifelong teaching means. .

What benefits does cloning bring to people? Humans will enter the era of cloning in an all-round way.

Cloning is an epoch-making breakthrough in the field of biotechnology. With the birth of Dolly the cloned sheep in Britain, people all over the world attach great importance to it. Scientists believe that it indicates that "mankind will enter the era of cloning in 2 1 century". Dolly successfully gave birth to the first lamb in April this year, which shows that sheep cloned from mature cells can be pregnant and give birth to healthy lambs. PPL Pharmaceutical Company, which helped to clone Dolly sheep, also cloned a calf this year.

Scientists at the Roslin Institute, which cloned Dolly, say that cloning to produce healthy offspring is very important for the commercialization of nuclear transplantation technology. The advantages of adopting cloning technology are: it can speed up the reproduction of improved livestock, which may lead to a revolution in animal husbandry; Can cultivate batches of high-quality cattle and sheep varieties to meet people's needs; Can save endangered wild animals and maintain ecological balance; It can mass-produce many precious drugs that people in the medical field urgently need. In addition, using cloning technology, cells, tissues or organs of plants can be cloned, and the traditional agriculture of "depending on the weather" in the past can be changed. In short, at the turn of the century, the development of science and technology in Chengdu will change the living environment of mankind and greatly benefit mankind.

Cloning technology can also bring medical breakthroughs. Scientists who cloned Dolly sheep say that if ethics and law allow, cloning babies for infertile couples will eventually appear. Ian Wilmut, the breeder of Dolly the cloned sheep, said: "Many things in life have two sides. Now, I have no doubt that the potential benefits of this technology far outweigh its potential disadvantages. As far as human cloning is concerned, this research will greatly extend human life. "

What benefits does the mobile phone bring to people? First, you can greet each other in time without traveling far.

There is a poem that says, "You live at the head of the river and I live at the end of the river. I miss you day and night and drink it all at once. " This poem is about the yearning and pain that people can't meet each other in the distance, and sets off people's emotions with the length of the river. No one can write such a poem now. If you don't have time to see each other, just dial the phone with you and everything will be solved. Never stand at the head of the river and watch the river flow eastward with emotion. It can be seen that mobile phones have solved the suffering of human lovesickness for thousands of years.

Second, when in danger, you can call a bodyguard.

Everyone can't predict his own danger. Perhaps the moment of "clear sky in Wan Li" will suddenly be "rainy and continuous". When the crisis comes, the mobile phone has become the best tool for us to report information to the outside world at the first time, and nothing can replace it. The Korean hostage incident is the first time that a hostage dialed his mobile phone and reported the news to his relatives. When the media has not got the exact news, the mobile phone has taken the lead in showing people its best function.

Third, at the last moment of life, realize the desire to express emotions.

Many times, people will finish what they want to say at the last moment of their lives, which is a kind of deep affection for their loved ones, but not everyone can realize this wish, especially for their loved ones, which may become the last regret, but the emergence of mobile phones has finally satisfied people's last wish. When the "9 1 1" incident happened, a passenger on the plane called his mother: "Mom, I love you!" When we saw the mother facing the reporter's question: "Did your son mention property at the last minute?" Mother said with tears, "My son only said that he loved me." Our tears will also come to our eyes.

Fourth, it can be used to ease conflicts and contradictions.

Anyone will have some confusion in interpersonal communication, and some questions will even be embarrassed to communicate face to face. At this time, you can make full use of the functions of your mobile phone. For example, you can send a text message to say hello first, and then call to express your feelings in an apologetic tone. This effect is often better than visiting people's homes. Many times, "face" has become an obstacle to people's communication. It is more effective to shield "face" and use language exclusively, so mobile phones act as the intermediary of "third party" in interpersonal communication, among which "wonderful" successful cases abound, and it should be said that everyone will try this communication method.

Fifth, close the distance between family members, and family members will always be around.

In the morning, the family is either at work or at school. Maybe there are old people at home, but with a mobile phone, you can do your best to work and study. No matter how far away your wife is from you, just a phone call is like being by your side. Whether parents go out for a walk or not, their voices and smiles are telling you with the voice on the phone that they are safe; No matter whether the child is in the classroom or in the playground, you can keep track of any movements of the child at any time through the mobile phone (sometimes it may be the teacher's mobile phone). . . . . So you can work hard. What is more important than the safety and happiness of relatives? !

Visit your boss's position and express your intention at any time.

Sometimes, we may have some problems in the workplace that we can't tell our boss. Some things even belong to personal problems and must be explained to our boss. Then you can find another place to meet your boss. In this way, the mobile phone becomes your best tool, and a phone call can completely expose your boss's position, so that you can avoid talking to him with a red face in public. Express your ideas clearly on another occasion. It only takes a phone call to solve your problem and easily solve your anxiety without others knowing.

Seven, can politely refuse others without losing friendship and face.

In work and life, people often talk and even ask too much. If you refuse this phenomenon face to face, it will generally make the other person lose face, especially friends for many years, and unexpected scenes may appear in anger. In that case, both sides will feel extremely embarrassed, and friends for many years may become "wars." Therefore, mobile phones have become the best way for us to refuse. Euphemistic language and even telling a lie are inevitable. The easy result is that mobile phones let us learn a simple way of thinking without losing our dignity.

Express your thoughts, words and words to the people you love.

The emergence of mobile phones should be said to be the most used for business, and then it may be that people who love each other use them the most frequently. So the manufacturers of mobile phone cards immediately promoted "couple cards" to people, which shows that mobile phones bring the greatest convenience to people who love each other. Of course, the business opportunities and profits brought by this "couple card" may be considerable. Therefore, not only people who have a "couple card", but also people who have a mobile phone, the first way to communicate with their lover is the mobile phone. How many couples have achieved "positive results" through oral and written communication of mobile phones may be countless.

Nine, look at the weather, know the clouds, adjust the whereabouts.

In the past, we wanted to know the weather forecast, generally from three aspects, one is the "weather situation" after "News Network"; The second is the "morning weather forecast" of the radio station; Third, the newspaper "Weather" is in the upper right corner of the day ..... Now we don't have to stay in front of the TV; No need to hang headphones; Let alone buy a newspaper. As long as you turn on your mobile phone, the "Fengyun World" of the day will immediately appear on your screen. So you can judge whether you are hiking in the suburbs; You can decide whether to fly overseas; You can plan whether to go to the streets or not. Mobile phones are convenient for us, but also allow us to choose our own whereabouts.

X. On-site evidence collection materials will become an indispensable use in the future.

The external functions of the mobile phone include recording and taking photos, and even the high-function configuration includes video recording facilities. In fact, these functions are taken care of by people who specialize in recording and taking pictures, because the "finished product" effect of mobile phones is far less than that of real professional equipment. However, these high configurations of mobile phones do bring us convenience. For example, there are no professional journalists or public security personnel at the scene. Perhaps the mobile phone has become the only "device" to record the scene. Its tiny body and unobtrusive telephone function can all show their talents in some special occasions, and finally the effect brought by mobile phones may be immeasurable.

Mobile phones have given us many benefits, and almost everyone has benefited from them, but it does not rule out that some people use mobile phones to do other incredible things, but even so, we can't deny the many benefits that mobile phones have brought to people. I hope that the beautiful life of each of us will be displayed in the mobile phone, and I hope that the bright future of each of us will be realized in the use of the mobile phone. [