EXPLORE
TECHNOLOGY
noun
tech·nol·o·gy
1a: the practical application of knowledge especially in a particular area. b: a capability given by the practical application of knowledge
COOL TECH SUBJECTS
How does it work?
Ever wondered how these tech gadgets work? Click on each to learn more.
"Computers connect to each other and to the Internet via wires, cables, radio waves, and other types of networking infrastructure. All data sent over the Internet is translated into pulses of light or electricity, also called "bits," and then interpreted by the receiving computer. The wires, cables, and radio waves conduct these bits at the speed of light. The more bits that can pass over these wires and cables at once, the faster the Internet works."
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WIFI & INTERNET
Each sensor in a camera is divided up into millions of red, green and blue pixels. When light hits the pixel, the sensor converts it into energy and a computer built inside of the camera reads just how much energy is being produced. Measuring how much energy each pixel has allows the sensor to determine what areas of the image are light and dark. And since each pixel has a color value, the camera’s computer is able to estimate the colors in the scene by looking at what other nearby pixels recorded. Putting the information from all the pixels together, the computer is able to approximate the shapes and colors in the scene.
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CAMERAS
"Cellular telephones, or cell phones, are even more convenient than cordless phones because they work over a much wider area. Because of this, in some places they are called mobile phones. They send and receive calls using radio waves. Cell-phone companies divide up an area, such as a city, into sections called cells. Each cell has a tower for receiving and sending out radio waves. If a caller travels from one cell into another, the call switches from tower to tower. This means that a cell phone can work anyplace that the cell-phone company’s network reaches."
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THE CELLPHONE
"All electronic games begin as computer instructions called software. A computer programmer writes the software commands to make the game run. The game software is then loaded onto hardware—a computer or a console. Inside the computer or the console, hardware and software work together to send electronic signals through the system. These signals create the game’s sounds and images. The player controls the action of the game using a paddle, a joystick, or a keypad."
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GAMING SYSTEM
LCD (liquid-crystal display) televisions have millions of tiny picture elements called pixels that can be switched on or off electronically to make a picture. Each pixel is made up of three smaller red, green, and blue sub-pixels. These can be individually turned on and off by liquid crystals or microscopic "light switches" that turn the sub-pixels on or off by twisting or untwisting. Since there is no large cathode-ray tube and phosphor screen, LCDs screens are much more slim and energy efficient than older TV receivers.
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TELEVISION
Why did the computer go to the dentist?
To get his bluetooth checked.
