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{{technical reasons|prefix=y|Code#|the EPs by Ladies' Code|Code 01 Bad Girl|and|Code 02 Pretty Pretty}}
{{More citations needed|date=March 2010}}
In [[communication]]s and [[Data processing|information processing]], '''code''' is a system of rules to convert [[information]]—such as a [[letter (alphabet)|letter]], [[word]], sound, image, or [[gesture]]—into another form, sometimes [[data compression|shortened]] or [[secrecy|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 system|visual]] [[symbol]]s, extended the range of communication across space and [[time]].
The process of '''encoding''' converts information from a [[communication source|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.
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