Virtual machine
A computer can act like a new one. It can run a whole other system inside. This helps us try new things safely. It is like having two computers in one. Do you want to try it?
Early Reader · Change the reading level on the articleTechnology articles — Page 83
Explore inventions, engineering, computing and the tools people build to solve problems. Choose an article below; its reading controls let you move between the available levels.
4,107 public articles · Page 83 of 86
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Virtual memory
Your computer has a trick. It makes its memory look very big. It uses extra space to help out. This helps your apps run well. It makes things easy for you. Can you see how it works?
Early Reader · Change the reading level on the articleVirtual power plant
Many small tools work as one. They can make power for your home. They use sun and wind to help. This helps us keep the lights on. It is a smart way to work. Can you imagine a big power team?
Early Reader · Change the reading level on the articleVirtual reality
You can visit a new world. It is not a real place. You wear a special mask. It shows you new things. You can move and look around. It feels like you are there! Would you like to go?
Early Reader · Change the reading level on the articleVirtual reality headset
You can wear a special mask. It shows a new world. This world can look very real. It can help you learn new things. It is fun to use! Do you want to try it?
Early Reader · Change the reading level on the articleVisa Inc.
Visa helps people pay for things. It uses special cards. You can use them at stores. This helps you buy food or toys. It is a big way to help the world. Do you use a card?
Early Reader · Change the reading level on the articleVisual Basic (.NET)
People use code to make computer apps. One way is called Visual Basic. It helps people build things for Windows. You can drag and drop buttons on a screen. This makes it easy to work. Do you like apps?
Early Reader · Change the reading level on the articleVisual communication
We use our eyes to learn. We see signs and pictures. They tell us things. These help us know the world. You see them every day. Do you like to look at pictures?
Early Reader · Change the reading level on the articleVitalik Buterin
Vitalik is a man who writes code. He helps make new ways to use money. He also helps build big computer tools. He gives much money to help people. He is a very kind person. Do you like computers too?
Early Reader · Change the reading level on the articleVK (service)
VK is a website for friends. You can talk to people there. You can share photos and music. It helps many people stay in touch. It is a big place for many users. Do you like to talk to friends online?
Early Reader · Change the reading level on the articleVladimir Grigoryevich Fyodorov
Vladimir was a smart man. He made tools for soldiers. He made guns that work on their own. This helped many people. He taught other people how to build. He was a great teacher. Do you like to build things?
Early Reader · Change the reading level on the articleVladimir Gusinsky
Vladimir was a man who ran many shops. He had a big TV station. He also had a bank. He liked to tell the news. It was important to tell the truth. Do you like to watch the news?
Early Reader · Change the reading level on the articleVladimir K. Zworykin
Vladimir was a smart man. He helped make the TV. Now we can watch shows at home. His work helps us see far away. He was a great inventor. Do you like to watch TV?
Early Reader · Change the reading level on the articleVladimir Shukhov
Vladimir was a smart man. He built big things. He made tall towers and long pipes. He also made many bridges. His work helps us today. Do you like big buildings?
Early Reader · Change the reading level on the articleVladislav Listyev
Vladislav was a famous TV man. He worked in Russia. He helped people learn things on TV. Many people liked to watch him. He died a long time ago. Do you like to watch TV?
Early Reader · Change the reading level on the articleVLC media player
VLC is a tool for videos. It plays movies and music. You can use it on a phone. It works on many computers too. It is free for everyone. Do you like to watch movies?
Early Reader · Change the reading level on the articleVlog
A vlog is a video diary. People film their own lives. They talk to the camera. You can watch them on a computer. It helps us learn about others. Do you like watching videos?
Early Reader · Change the reading level on the articleVocoder
A machine can change your voice. It can make you sound like a robot. This helps people make new music. It also helps people talk on radios. It is a fun tool for sound. Do you want to sound like a robot?
Early Reader · Change the reading level on the articleVodafone
Vodafone helps people talk. It uses big networks. People use these to call friends. It works in many places. It helps us stay close. Do you use a phone to talk?
Early Reader · Change the reading level on the articleVolatile memory
Computers have a way to hold facts. They need power to keep them. If the power goes out, the facts go away. This helps keep some things safe. It is fast too. Do you use a computer?
Early Reader · Change the reading level on the articleVolga–Don Canal
This is a long path for ships. It connects two big rivers. Ships carry food and oil through it. It helps people trade things. It is a very big job. Can you see the big water?
Early Reader · Change the reading level on the articleVolkswagen Beetle
This is a small car. It looks like a bug. Many people drove it. It was a very famous car. It helped families go places. Do you like this car?
Early Reader · Change the reading level on the articleVon Neumann architecture
Most computers work in one way. They use a plan to think. This plan stores facts and rules. It helps the machine do jobs. This makes your computer fast. It is very smart. Do you like computers?
Early Reader · Change the reading level on the articleVremya
This is a news show. It is on TV in Russia. It tells people what is happening. It has been on for a long time. It helps us learn about the world. Do you watch the news?
Early Reader · Change the reading level on the articleV/STOL
Some planes do not need long roads. They can go up straight. They can land in small spots. This helps them fly where they are needed. It is very cool! Can you imagine a plane landing like that?
Early Reader · Change the reading level on the articleVulcanization
Heat can make rubber strong. It makes rubber hard. It does not get sticky. This helps make car tires. It also makes toys. It is very useful. Do you use rubber things?
Early Reader · Change the reading level on the articleVulkan
Computers use code to make pictures. This code helps games look good. It tells the computer how to work fast. This makes games fun to play. It works on many machines. Do you like video games?
Early Reader · Change the reading level on the articleVulnerability (computer security)
Computers can have tiny mistakes. These mistakes are like small holes. Bad people can find these holes. They use them to get inside. We can fix them with updates. This keeps our tools safe. Do you use a computer?
Early Reader · Change the reading level on the articleWagon
A wagon has four wheels. Animals pull it. Horses or oxen can pull it. It carries things like food or wood. It helps people move big loads. Do you like wagons?
Early Reader · Change the reading level on the articleWalkie-talkie
A walkie-talkie is a small radio. You can carry it in your hand. It lets you talk to a friend. You press a button to speak. Then you listen to them. It helps people talk far away. Do you want to try one?
Early Reader · Change the reading level on the articleWalter Chrysler
Walter Chrysler made cars. He started by fixing trains. He worked hard to build a big car company. His name is on many cars today. He was a very busy man. Do you like cars?
Early Reader · Change the reading level on the articleWalter Winchell
Walter Winchell told news stories. He told stories on the radio. He also wrote in newspapers. Many people listened to him. He was very famous. Do you like news stories?
Early Reader · Change the reading level on the articleWang Jianlin
Wang Jianlin is a man from China. He builds big places for people. He owns many movie theaters. He also builds large shopping malls. He helps people by giving money to good causes. Do you like going to the movies?
Early Reader · Change the reading level on the articleWang Zhen (inventor)
Wang Zhen was a smart man. He made a new way to print books. He used small pieces of wood. This helped people make books fast. He also wrote about farming. His book helped farmers. Do you like books?
Early Reader · Change the reading level on the articleWankel engine
A Wankel engine is a special motor. It has a shape like a triangle. This part spins fast inside a shell. It helps move cars and boats. It is small and smooth. Do you like fast cars?
Early Reader · Change the reading level on the articleWard Cunningham
Ward Cunningham makes things for computers. He made a way to share web pages. This helps many people work together. It is a very smart idea. Do you like to share things with friends?
Early Reader · Change the reading level on the articleWarehouse store
Some stores sell food for less money. These stores use big shelves. They sell a lot of things at once. This helps you save money. It is a smart way to shop. Do you like to save money?
Early Reader · Change the reading level on the articleWarhead
A warhead is a part of a bomb. It carries the things that make a blast. Some use heat or gas. These parts can cause harm. It is a very serious thing. Do you see how it works?
Early Reader · Change the reading level on the articleWarner Bros. Pictures
Warner Bros. makes many movies. They make films for you to watch. They also make fun cartoons. They have been around for a long time. A group of brothers started it all. Do you like to watch movies?
Early Reader · Change the reading level on the articleWarner Music Group
Warner Music Group makes music. It helps people hear songs. Many singers work with them. They work in many countries. This helps us hear new songs. Do you like to listen to music?
Early Reader · Change the reading level on the articleWarp and weft
We make cloth by weaving. Some threads stay tight. Other threads go in and out. This makes a soft fabric. We can use it for clothes. Do you like soft clothes?
Early Reader · Change the reading level on the articleWasher (hardware)
A washer is a thin plate. It has a hole in the middle. We use it with a bolt. It helps keep things tight. It can be made of metal or plastic. Do you like to build things?
Early Reader · Change the reading level on the articleWashington Metropolitan Area Transit Authority
Metro helps people move around. It has fast trains. It also has big buses. These help you get to school or work. It is a great way to travel. Do you like to ride the train?
Early Reader · Change the reading level on the articleWaste container
A bin holds your trash. It can be made of metal or plastic. Some bins have a foot pedal. You step on it to open the lid. This keeps your hands clean. Do you use a bin at home?
Early Reader · Change the reading level on the articleWatchmaker
A watchmaker fixes watches. They work with tiny parts. They use tools to help them see. This job helps us tell time. It is a very neat job. Do you like watches?
Early Reader · Change the reading level on the articleWatchtower
A watchtower is a tall building. It helps people look far away. A guard stays high up to see. This keeps the area safe. It is a very helpful tool. Have you seen a tall tower?
Early Reader · Change the reading level on the articleWater bottle
A water bottle holds your drink. You can take it with you. Some are made of metal or glass. Some are made of plastic. You can use one bottle many times. This helps our Earth. Do you have a favorite bottle?
Early Reader · Change the reading level on the articleWater cannon
A water cannon shoots water. It shoots a big stream. The water goes far away. It helps put out fires. It can also help wash cars. It is a very strong tool. Do you like playing with water?
Early Reader · Change the reading level on the article