Changes brought about by the development of science and technology in 150 words

As soon as I entered the house and put down my school bag, I couldn't wait to shout loudly, "Mom, Mom, come here, please tell me, what changes technology has brought to us?" Mom said

Look at you, like a fire burning your eyebrows, let me tell you slowly. Technology has brought so many changes to people. For example, the invention of the earliest gunpowder enabled human beings to split mountains and open roads, build bridges, and build, which led to the development of various undertakings, and the military industry also developed rapidly; With the advent of papermaking and printing technology, human beings have the conditions for writing, and have promoted extensive exchanges in culture, art, language, science and technology, economy, etc.; The invention of the compass promoted the development of navigation and the world, completed the great geographical discoveries, and enabled mankind to understand the earth; The current scientific and technological achievements of hybrid rice and super rice have increased grain production and solved the problem of feeding the world's population; Like a god.

Five, God six....These shuttles helped astronauts get to the moon, explore Mars, and roam space; Sputnik provides us with satellite images and weather forecasts, as well as television signals. Robots can do many things that humans can't, such as diving into the deep sea to investigate, breaking into fires to save people; The maglev train is particularly fast, saving people time when traveling; People use atomic energy to generate many, many more electricity...

Two people are separated by thousands of mountains and rivers, but as long as they pick up the earpiece and dial a few numbers, it doesn't take a few minutes to hear each other's voices and communicate in language, which is the miracle that ** brings to human beings. It's not enough to have **, human beings have invented computers, computers are better than **, **can only hear each other's voices, and computers can communicate in text, and can also **talk, and can see each other. If there is a holiday, send an e-mail, and the other party can receive it in a few seconds, which can not only save paper, but also quickly let others receive ......The development of science and technology has improved our living standards and improved the quality of life! ”

Key words: 500 words for the fifth grade of primary school.

Word Count: 500 words essay.

Today, the teacher assigned an essay. The requirement is to read the text taught today to your father or mother, ask them to talk about the development brought about by the development of science and technology, and then write down their words.

As soon as I got home, I let out my voice and shouted, "Mom, please tell me, what changes has technology brought to us?" Mom said

The previous life was bitter, which is like now, what do you want. "What's so bitter about the absolute code? I asked, confused.

Mom sighed: "Alas, there used to be several pencils for a dime, which is like now!"

Some pens are only a few tens of yuan, Lin Rong, you are just in time for the blessing period!

No, you can buy several pens for a dime, and those pencils are fake, right? "I broke the casserole and asked. Mom said: "In the past, no matter whether the pen was good or bad, as long as there was a pen to write, they were satisfied!"

Oh, I see!

How industrious the people used to be!

From: Essay Daquan Mom also said: "The tuition fee in the past is less than your current pocket money. I asked, "How much did I pay for the tuition before?" "Two yuan" strikes. "That's cheap!

In the past, two yuan and Zen were not easy to come by. The current tuition fee is hundreds of dollars, and the current life is really new compared to the previous life. **: Essay Network Ah!

The current life is much better than the previous life, but the future life will definitely be a hundred times better than the current life. I believe!

In the 20th century, human beings invented many useful items for us, such as: computers, televisions, ......This.

I once heard my grandfather say that as early as 100 years of history, society was an agrarian society that depended on the sky for food. At that time, there were no electric lights, no televisions, no cars, and they ate leaves and bark, even belts. Now I hear my mother say that when she was a child, she went to self-study in the morning and evening, and everyone carried a kerosene lamp, not even a stationery box, she used a cardboard box as a stationery box, and she ate pickles every day, and only ate white flour steamed buns when she came to visit or celebrated her birthday.

Crops are grown on the shoulders of men, and oxen and horses are used to plough the fields. Each child only adds one new dress a year, and the new clothes are not worn until the New Year, and adults do not even add one new dress a year. In the eighties, the first four modernizations were proposed, and the land was covered in a large way.

The living conditions of the people have been improved, and they have stopped eating the nest and eaten the white **, and lived in a new tile house. In the twentieth century, food was nutritious, clothing was famous, peasants lived in high-rise buildings, and people in cities lived in villas and cars. Families in rural areas have also bought refrigerators, color TVs, washing machines, and every family has used mobile ** and driven motorcycles.

In the 21st century, China has landed on the moon, opened high-speed trains, ocean-going ships, etc., and now there are countless new technologies. Looking at the past, Bibi now, we live in a very comfortable living environment and do not worry about spending money on food and clothing. We must study hard and serve the motherland when we grow up.

In the 20th century, we ate and talked about nutrition, and the clothes we wore were all brand-named, and the peasants lived in buildings, and the people in the cities lived in other fields. The people who watched the sedan were humming a very loud tune, and all the rural families bought refrigerators, color TVs, washing machines, desk lamps, etc. Basically every family uses mobile**.

We must be good children who love to learn, and we must repay our motherland when we grow up.

Today, I would like to introduce you to the development of computers. Computers, also known as electronic computers, were invented by von Neumann in the United States in February 1946.

At first, computers needed a room to fit and several people to operate, and computers were so slow that it took a long time to calculate a mathematical equation.

However, because of the advancement of science and technology, computers have become pure screen computers, and the speed of operation has become faster, but the volume has become smaller, and one person can operate and move! The most important thing is that computers have more and more functions.

With the continuous efforts of scientists, the pure screen computer has become an LCD computer, the computer screen is very thin, the radiation is very small, and the screen is much clearer.

This is how computers evolved! This is the change brought about by the development of technology!

Whoever sleeps when he's sleepy