code (disambiguation)

The word code has a number of meanings.

A code is a rule for converting a piece of information into another object or action, not necessarily of the same sort.

A code (cryptography) is a code designed for hiding the meaning of a message.
A computer networks, a line code adapts a signal to a channel, channel coding adds a simple change to detect errors, and source coding removes redundant symbols from a message, resulting in data compression.
An error-correcting code is a type of code designed to detect and correct some errors in the transmission of messages. Related, but simpler, codes can detect but not correct some errors. Forward error correction data codes include block code and convolutional code.
Source Code consists of instructions to a computer in a programming language and is used both as a noun and a verb.
Object code and machine code are binary instructions.

The genetic code made of DNA specifies which transfer RNA sequence to build.
A civil code, is set of rules, such as code of honor, code of laws, or dress code. See also codification, legal code, penal code, fire code, traffic code, electrical code, Code of Federal Regulations.
Code Blue is a medical jargon term for certain types of critical medical emergency.
Code Red has its own disambiguation page.
Code Adam is a missing child announcement.

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