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An interface control drawing or interface control document (ICD) in systems engineering 〔Wolter J. Fabrycky, Benjamin S. Blanchard (2005). ''Systems Engineering and Analysis''. Prentice-Hall, 2005〕 and software engineering, describes the interface or interfaces between subsystems or to a system or subsystem. == Overview == An ICD may describe: * The inputs and outputs of a single system, e.g. "The Wikipedia Interface Control Document." * The interface between two systems or subsystems, e.g. "The Doghouse to Outhouse Interface Control Document." * The complete interface protocol from the lowest physical elements (e.g., the mating plugs, the electrical signal voltage levels) to the highest logical levels (e.g., the level 7 application layer of the OSI model), or some subset thereof. The purpose of the ICD is to communicate all possible inputs to and all potential outputs from a system for some potential or actual user of the system. The internal interfaces of a system or subsystem are typically not documented in an ICD, but rather in a system design document (such as a software design document). Interface control documents are a key element of systems engineering as they define and control the interface(s) of a system, and thereby bound its requirements. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Interface control document」の詳細全文を読む スポンサード リンク
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