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Learn about the ISO 3166-1 standard that defines codes for the names of countries, dependent territories, and special areas of geographical interest. Find out the criteria, information, and disputes for the three sets of country codes: alpha-2, alpha-3, and numeric.
Learn about the standard codes for the names of countries and their subdivisions, maintained by the International Organization for Standardization (ISO). Find the ISO 3166-1 alpha-2, alpha-3 and numeric codes, the ISO 3166-2 subdivision codes and the Internet country code top-level domains for each of the 249 countries.
ISO 639 is a standardized nomenclature used to classify languages. This table lists all two-letter codes (set 1) and some of the three-letter codes (sets 2–5) for each language, along with their names, types and scopes.
This web page shows the current and past codes used by the International Olympic Committee (IOC) for each National Olympic Committee (NOC). The code for Ivory Coast is CIV, which was also used for Costa de Marfil in 1964 and 1968.
This list of airports in Texas (a U.S. state) is grouped by type and sorted by location.It contains all public-use and military airports in the state. Some private-use and former airports may be included where notable, such as airports that were previously public-use, those with commercial enplanements recorded by the FAA or airports assigned an IATA airport code.
Learn about the standard for in-band signaling to control cursor location, color, font styling, and other options on video text terminals and terminal emulators. Find out the history, platform support, and related standards of ANSI escape sequences.
One such type of Gray code is the n-ary Gray code, also known as a non-Boolean Gray code. As the name implies, this type of Gray code uses non-Boolean values in its encodings. For example, a 3-ary Gray code would use the values 0,1,2. [31] The (n, k)-Gray code is the n-ary Gray code with k digits. [63]
Learn about the September 11, 2001 attacks that destroyed the Twin Towers of the World Trade Center in New York City, killing almost 3,000 people. Find out how the fires, the plane impacts and the structural design caused the total progressive collapse of the buildings.