:''This article is about telecommunications. For the early computer programming language see, see [[Short Code (Computer language)]]''.
'''Short codes''', also known '''short numbers''' or '''Common Short Codes''' (CSC) are special telephone numbers, significantly shorter than full telephone numbers, which can be used to address [[Short Message Service|SMS]] and [[Multimedia Messaging System|MMS]] messages from [[mobile telephone]]s. They are designed to be shorter to read out and easier to remember than a normal length [[telephone number]]. While similar to telephone numbers, they are, at the technological level, unique to each operator, although providers generally have agreements to avoid overlaps.
In a computing context, the plural name '''[[Short codes]]''' refers to the language of the same name which was the first actually implemented language<ref name=Sebesta/> used for an electronic computing device. The technique used in programming the device involved using codes which mapped to hardware functions. At the time,the language had to be 'hand coded' or simply put 'manually compiled' to [[machine code]], rather than being able to parse it through a [[lexical analyser]] or [[compiler]]. The technique is named synonymously with [[pseudocodes]], which can be confused with the highlevel language-independent algorithm 'language' representation. Short Code was the predecessor to [[Speedcoding]], which extended Short Code by allowing for floating point calculations and code representation for the four calculation operators (* / + -?)
