A code is a rule for converting a piece of information (for example, a letter, word, phrase, or gesture) into another form or representation (one sign into another sign), not necessarily of the same type.

In communications and information processing, encoding is the process by which information from a source is converted into symbols to be communicated. Decoding is the reverse process, converting these code symbols back into information understandable by a receiver.

One reason for coding is to enable communication in places where ordinary spoken or written language is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaller 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.

Read more about CodeTheory, Other Examples, Codes and Acronyms

Other articles related to "code, codes":

Teleprinter - Teletypesetter
... In addition to the 5-bit Baudot code and the much later seven-bit ASCII code, there was a six-bit code known as the TTS code (Teletypesetter) used by news wire services ... Through the use of "shift in" and "shift out" codes, this six-bit code could represent a full set of upper and lower case characters, digits, symbols commonly used in newspapers, and limited ...
Codes and Acronyms
... and abbreviations can be considered codes, and in a sense all languages and writing systems are codes for human thought ... International Air Transport Association airport codes are three-letter codes used to designate airports and used for bag tags ... Station codes are similarly used on railways, but are usually national, so the same code can be used for different stations if they are in different countries ...
X86 Calling Conventions - Callee Clean-up
... They may be, however, more space efficient, as the code needed to unwind the stack does not need to be generated for each call ... which utilize these conventions are easy to recognize in ASM code because they will unwind the stack prior to returning ... Such code looks like this ret 12 ...
National Guard Of The United States - National Guard Active Duty Character
... Broadly, there are two titles in the United State Code (USC) under which units and troops may be activated, Title 32 (Militia Code) and Title 10 (Uniform ...
... Xpediter for DB2 helps developers quickly ascertain how the code works and how to fix it when it doesn’t for DB2 Stored Procedures Xpediter/Code Coverage ... Xpediter/TSO offers complete control of application code execution in the batch testing environment ...

Famous quotes containing the word code:

    ...I had grown up in a world that was dominated by immature age. Not by vigorous immaturity, but by immaturity that was old and tired and prudent, that loved ritual and rubric, and was utterly wanting in curiosity about the new and the strange. Its era has passed away, and the world it made has crumbled around us. Its finest creation, a code of manners, has been ridiculed and discarded.
    Ellen Glasgow (1873–1945)

    Acknowledge your will and speak to us all, “This alone is what I will to be!” Hang your own penal code up above you: we want to be its enforcers!
    Friedrich Nietzsche (1844–1900)

    Faultless honesty is a sine qua non of business life. Not alone the honesty according to the moral code and the Bible. When I speak of honesty I refer to the small, hidden, evasive meannesses of our natures. I speak of the honesty of ourselves to ourselves.
    Alice Foote MacDougall (1867–1945)