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Certain agencies may add or remove certain codes. For example, in the Los Angeles Police Department's radio procedures, Code 1 is not a response code, and its meaning is transferred to Code 2, the original meaning of which is transferred to the semi-official response code "Code 2-High". Additionally, some agencies use "Code 99" which means for ...
Website. code.org. Code.org is a non-profit organization and educational website founded by Hadi and Ali Partovi [1] aimed at K-12 students that specializes in computer science. [2] The website includes free coding lessons and other resources. The initiative also targets schools in an attempt to encourage them to include more computer science ...
When three-digit codes share a common leading pair, the shared prefix is marked by an arrow, (↙ ) pointing down and left to the three-digit codes. Unassigned codes are denoted by a dash (—). Countries are identified by ISO 3166-1 alpha-2 country codes; codes for non-geographic services are denoted by two asterisks (**).
ISO 3166-1 alpha-2 codes are two-letter country codes defined in ISO 3166-1, part of the ISO 3166 standard [1] published by the International Organization for Standardization (ISO), to represent countries, dependent territories, and special areas of geographical interest. They are the most widely used of the country codes published by ISO (the ...
ISO 3166-1 alpha-2 – two-letter country codes which are also used to create the ISO 3166-2 country subdivision codes and the Internet country code top-level domains. ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes.
It defines three sets of country codes: [1] ISO 3166-1 alpha-2 – two-letter country codes which are used most prominently for the Internet's country code top-level domains (with a few exceptions). ISO 3166-1 alpha-3 – three-letter country codes which allow a better visual association between the codes and the country names than the alpha-2 ...
For relief in these cases, they finally eliminated the requirement that the middle digit of the central office code could not be 0 or 1. This resulted in the format of interchangeable central office codes, N X X, where N=2–9 and X=0–9. The first cities that required this action, in 1974, were the cities of Los Angeles with area code 213 and ...
An especially popular Viterbi-decoded convolutional code, used at least since the Voyager program, has a constraint length K of 7 and a rate r of 1/2. [ 12 ] Mars Pathfinder , Mars Exploration Rover and the Cassini probe to Saturn use a K of 15 and a rate of 1/6; this code performs about 2 dB better than the simpler K = 7 {\displaystyle K=7 ...