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Color-coded
A color code is a system for displaying information by using different colors. The earliest examples of color codes in use are for long-distance communication by use of flags, as in semaphore communication. The United Kingdom adopted a color code scheme for such communication wherein red signified danger and white signified safety, with other colors having similar assignments of meaning. As chemistry and other technologies advanced, it became expedient to use coloration as a signal for telling apart things that would otherwise be confusingly similar, such as wiring in electrical and electronic devices, and pharmaceutical pills. The use of color codes has been extended to abstractions, such as the Homeland Security Advisory System color code in the United States. Similarly, hospital emergency codes often incorporate colors (such as the widely used "Code Blue" indicating a cardiac arrest), although they may also include numbers, and may not conform to a uniform standard. Colo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Color Code
An electronic color code or electronic colour code (see spelling differences) is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others. A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables. Different codes are used for wire leads on devices such as transformers or in building wiring. History Before industry standards were established, each manufacturer used their own unique system for color coding or marking their components. In the 1920s, the RMA resistor color code was developed by the Radio Manufacturers Association (RMA) as a fixed resistor coloring code marking. In 1930, the first radios with RMA color-coded resistors were built. Over many decades, as the organization name changed (RMA, RTMA, RETMA, EIA) so was the name of the code. Though known most recently as EIA color code, the four name variations are found in books, magazines, cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homeland Security Advisory System
In the United States, the Homeland Security Advisory System (HSAS) was a color-coded terrorism threat advisory scale created in March 2002 under the Bush Administration in response to the September 11 attacks. The different levels triggered specific actions by federal agencies and state and local governments, and they affected the level of security at some airports and other public facilities. It was often called the "terror alert level" by the U.S. media. The system was replaced on April 27, 2011, with a new system called the National Terrorism Advisory System. History The system was created by Homeland Security Presidential Directive 3 on March 11, 2002, in response to the September 11 attacks. It was meant to provide a "comprehensive and effective means to disseminate information regarding the risk of terrorist acts to federal, state, and local authorities and to the American people." It was unveiled March 12, 2002, by Tom Ridge, then the Assistant to the President for Home ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Coding Of Optical Fibers
A fiber-optic cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable, but containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with plastic layers and contained in a protective tube suitable for the environment where the cable is used. Different types of cable are used for different applications, for example, long distance telecommunication, or providing a high-speed data connection between different parts of a building. Design Optical fiber consists of a core and a cladding layer, selected for total internal reflection due to the difference in the refractive index between the two. In practical fibers, the cladding is usually coated with a layer of acrylate polymer or polyimide. This coating protects the fiber from damage but does not contribute to its optical waveguide properties. Individual coated fibers (or fibers formed into ribbons or bundles) then have a tough r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Color Blindness
Color blindness or color vision deficiency (CVD) is the decreased ability to color vision, see color or differences in color. It can impair tasks such as selecting ripe fruit, choosing clothing, and reading traffic lights. Color blindness may make some academic activities more difficult. However, issues are generally minor, and the colorblind automatically develop adaptations and coping mechanisms. People with achromatopsia, total color blindness (achromatopsia) may also be Hemeralopia, uncomfortable in bright environments and have visual impairment, decreased visual acuity. The most common cause of color blindness is an Heredity, inherited problem or variation in the functionality of one or more of the three classes of cone cells in the retina, which mediate color vision. The most common form is caused by a genetic disorder called congenital red–green color blindness. Males are more likely to be color blind than females, because the genes responsible for the most common for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC System Design Guide
The PC System Design Guide (also known as the PC-97, PC-98, PC-99, or PC 2001 specification) is a series of hardware design requirements and recommendations for IBM PC compatible personal computers, compiled by Microsoft and Intel Corporation during 1997–2001. They were aimed at helping manufacturers provide hardware that made the best use of the capabilities of the Microsoft Windows operating system, and to simplify setup and use of such computers. Every part of a standard computer and the most common kinds of peripheral devices are defined with specific requirements. Systems and devices that meet the specification should be automatically recognized and configured by the operating system. Versions Four versions of the PC System Design Guide were released. In PC-97, a distinction was made between the requirements of a ''Basic PC'', a ''Workstation PC'' and an ''Entertainment PC''. In PC-98, the ''Mobile PC'' was added as a category. In PC 2001, the ''Entertainment PC'' was dropp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jump Start (vehicle)
A jump start, also called a boost, is a procedure of starting a motor vehicle (most commonly cars or trucks) that has a discharged or depleted battery. A temporary connection is made to the battery of another vehicle, or to some other external power source. The external supply of electricity recharges the disabled vehicle's battery and provides some of the power needed to crank the engine. Once the vehicle has been started, its normal charging system will recharge, so the auxiliary source can be removed. If the vehicle charging system is functional, leaving the engine running will restore the charge of the battery, although it is usually recommended to drive the vehicle for a few minutes after starting to speed up the recharging process. Motorists may carry jumper cables and other equipment in case of accidental discharge of the vehicle battery (for example, by headlights, interior lights or ignition switch left on while the engine is not running). Safe procedures for connecting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surround Sound
Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener ( surround channels). Its first application was in movie theaters. Prior to surround sound, theater sound systems commonly had three ''screen channels'' of sound that played from three loudspeakers (left, center, and right) located in front of the audience. Surround sound adds one or more channels from loudspeakers to the side or behind the listener that are able to create the sensation of sound coming from any horizontal direction (at ground level) around the listener. The technique enhances the perception of sound spatialization by exploiting sound localization: a listener's ability to identify the location or origin of a detected sound in direction and distance. This is achieved by using multiple discrete audio channels routed to an array of loudspeakers. Surround sound typically has a listener location ( sweet sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three-phase Electric Power
Three-phase electric power (abbreviated 3φ) is a common type of alternating current used in electricity generation, transmission, and distribution. It is a type of polyphase system employing three wires (or four including an optional neutral return wire) and is the most common method used by electrical grids worldwide to transfer power. Three-phase electrical power was developed in the 1880s by multiple people. Three-phase power works by the voltage and currents being 120 degrees out of phase on the three wires. As an AC system it allows the voltages to be easily stepped up using transformers to high voltage for transmission, and back down for distribution, giving high efficiency. A three-wire three-phase circuit is usually more economical than an equivalent two-wire single-phase circuit at the same line to ground voltage because it uses less conductor material to transmit a given amount of electrical power. Three-phase power is mainly used directly to power large induction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Health (gaming)
Health is an attribute in a video game or tabletop game that determines the maximum amount of damage or loss of stamina that a character or object can take before dying or losing consciousness. In role-playing games, this typically takes the form of hit points (HP), a numerical attribute representing the health of a character or object. The game character can be a player character, a boss, or a mob. Health can also be attributed to destructible elements of the game environment or inanimate objects such as vehicles and their individual parts. In video games, health is often represented by visual elements such as a numerical fraction, a health bar or a series of small icons, though it may also be represented acoustically, such as through a character's heartbeat. Mechanics In video games, as in tabletop role-playing games, an object usually loses health as a result of being attacked. Protection points or armor help them to reduce the damage taken. Characters acting as tanks usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magic (gaming)
Magic or mana is an attribute assigned to characters within a role-playing or video game that indicates their power to use special magical abilities or "spells". Magic is usually measured in magic points or mana points, shortened as MP. Different abilities will use up different amounts of MP."The History of Mana: How an Austronesian Concept Became a Video Game Mechanic" June 17, 2014, Alex Golub, Assistant Professor of Anthropology, University of Hawai‘i at Mānoa. When the MP of a character reaches zero, the character will not be able to use special abilities until some of their MP is recovered. Much like |
StarCraft
''StarCraft'' is a military science fiction media franchise created by Chris Metzen and James Phinney and owned by Blizzard Entertainment. The series, set in the beginning of the 26th century, centers on a galactic struggle for dominance among four species—the adaptable and mobile Terrans, the ever-evolving insectoid Zerg, the powerful and enigmatic Protoss, and the godlike Xel'Naga creator race—in a distant part of the Milky Way galaxy known as the Koprulu Sector. The series debuted with the video game '' StarCraft'' in 1998. It has grown to include a number of other games as well as eight novelizations, two ''Amazing Stories'' articles, a board game, and other licensed merchandise such as collectible statues and toys. Blizzard Entertainment began planning ''StarCraft'' in 1995 with a development team led by Metzen and Phinney. The game debuted at the 1996 Electronic Entertainment Expo and used a modified ''Warcraft II'' game engine. ''StarCraft'' also marked the cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combat Evolved
''Halo: Combat Evolved'' is a 2001 first-person shooter game developed by Bungie and published by Microsoft Game Studios. It was released as a launch game for Microsoft's Xbox (console), Xbox video game console on November 15, 2001. The game was ported to Microsoft Windows and Mac OS X in 2003. It was later released as a downloadable Xbox Original for the Xbox 360. ''Halo'' is set in the 26th century, twenty-sixth century, with the player assuming the role of the Master Chief (Halo), Master Chief, a cybernetically enhanced supersoldier. The Chief is accompanied by Cortana (Halo), Cortana, an artificial intelligence. Players battle aliens as they attempt to uncover the secrets of the eponymous Halo (megastructure), Halo, a ring-shaped artificial world. Bungie began the development of what would eventually become ''Halo'' ''CE'' in 1997. Initially, the game was a real-time strategy game that morphed into a third-person shooter before becoming a first-person shooter. During develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
