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.
Other articles related to "code, codes":
... 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 ...
... 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 ...
... 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 Code of Military ...
... They may be, however, more space efficient, as the code needed to unwind the stack does not need to be generated for each call ... Functions 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 ...
... 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 (18731945)
“Wise Draco comes, deep in the midnight roll
Of black artillery; he comes, though late;
In code corroborating Calvins creed
And cynic tyrannies of honest kings;
He comes, nor parlies; and the Town, redeemed,
Gives thanks devout; nor, being thankful, heeds
The grimy slur on the Republics faith implied,
Which holds that Man is naturally good,
Andmoreis Natures Roman, never to be
—Herman Melville (18191891)
“Motion or change, and identity or rest, are the first and second secrets of nature: Motion and Rest. The whole code of her laws may be written on the thumbnail, or the signet of a ring.”
—Ralph Waldo Emerson (18031882)