System of rules to convert information into another form or representation
For other uses, see Code (disambiguation)."Encoding" redirects here. For other uses, see Encoding (disambiguation).
For technical reasons, terms beginning with "Code#" redirect here. For the EPs by Ladies' Code, see Code 01 Bad Girl and Code 02 Pretty Pretty.
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In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is an invention of language, which enabled a person, through speech, to communicate what they thought, saw, heard, or felt to others. But speech limits the range of communication to the distance a voice can carry and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time.
The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or/and Spanish.
One reason for coding is to enable communication in places where ordinary plain language, spoken or written, is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaler or the arms of a semaphore tower encodes parts of the message, typically individual letters, and numbers. Another person standing a great distance away can interpret the flags and reproduce the words sent.
In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another...
CODE may refer to: Call of Duty Endowment, a non-profit foundation CODE University of Applied Sciences, a university in Berlin Confederation of Democracy...
A ZIP Code (an acronym for Zone Improvement Plan) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen...
Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called dots and...
A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of...
A QR code (quick-response code) is a type of two-dimensional matrix barcode, invented in 1994, by Japanese company Denso Wave for labelling automobile...
programs Line coding, in data storage Source coding, compression used in data transmission Coding theory Channel coding, in coding theory Coding (social sciences)...
No Code is the fourth studio album by the American rock band Pearl Jam, released on August 27, 1996, through Epic Records. Following a troubled tour for...
No code may refer to: No Code, a 1996 album by Pearl Jam No Code (company), a British video game company No-code development platform, software development...
Code Geass: Lelouch of the Rebellion (Japanese: コードギアス 反逆のルルーシュ, Hepburn: Kōdo Giasu: Hangyaku no Rurūshu), often referred to simply as Code Geass, is...
In computing, source code, or simply code or source, is text (usually plain text) that conforms to a human-readable programming language and specifies...
An IATA airport code, also known as an IATA location identifier, IATA station code, or simply a location identifier, is a three-letter geocode designating...
systems to uniquely specify literature references. The Bibliographic Reference Code (refcode) was originally developed to be used in SIMBAD and the NASA/IPAC...
An EPPO code, formerly known as a Bayer code, is an encoded identifier that is used by the European and Mediterranean Plant Protection Organization (EPPO)...
by the International Organization for Standardization (ISO) that defines codes for the names of countries, dependent territories, special areas of geographical...
Airport code may refer to: International Air Transport Association airport code, a three-letter code which is used in passenger reservation, ticketing...
Country code: 52 International call prefix: 00 Trunk Prefix: none The telecommunication services of Mexico are provided by a division of the telephone...
Code word may refer to: Code word (communication), an element of a standardized code or protocol Code word (figure of speech), designed to convey a predetermined...
This is a list of airline codes. The table lists IATA's two-character airline designators, ICAO's three-character airline designators and the airline...
Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number...
Napoleonic Code (French: Code Napoléon), officially the Civil Code of the French (French: Code civil des Français; simply referred to as Code civil), is...
ZIP code is used by the Philippine Postal Corporation (PhlPost) to simplify the distribution of mail. While its function similar with the ZIP Codes used...
A country code is a short alphanumeric identification code for countries and dependent areas. Its primary use is in data processing and communications...
The ICAO airport code or location indicator is a four-letter code designating aerodromes around the world. These codes, as defined by the International...
Hospital emergency codes are coded messages often announced over a public address system of a hospital to alert staff to various classes of on-site emergencies...
The handkerchief code (also known as the hanky code, the bandana code, and flagging) is a system of color-coded cloth handkerchief or bandanas for non-verbally...
The following are lists of airports by IATA code and ICAO code: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A B C D E F G H I J K L M N O P Q R...
Code Red may refer to: Code Red, a series of books for teenagers written by Chris Ryan Code Red (American TV series), a 1981–82 American television series...
Universal Product Code, common barcode used to identify packaged products Electronic Product Code, an RFID code mainly applied as a packaging code for packaged...
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