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Breaking Down the System

“There is just the right amount of structure — it’s adaptable to individual needs. We’re fighting to keep it simple and flexible.” - Mari Maeda, Feb 25, 2010. Breaking Down the System. Work Breakdown Structure. Functional Breakdown. ICOM Codes. Inputs are transformed into outputs ,

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Breaking Down the System

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  1. “There is just the right amount of structure — it’s adaptable to individual needs. We’re fighting to keep it simple and flexible.” - Mari Maeda, Feb 25, 2010

  2. Breaking Down the System

  3. Work Breakdown Structure

  4. Functional Breakdown

  5. ICOM Codes Inputs are transformed into outputs, controls constrain or dictate under what conditions transformations occur, and mechanisms describe how the function is accomplished. C1 O1 I1 Function M1

  6. Requirements Breakdown System-level requirements Sub-system-level requirements Component-level requirements Manufacturing requirements Support requirements: Infrastructure, Elements

  7. ProcessRequirements FunctionalRequirements House ofQuality (QFD Matrix 1) Design Characteristics House ofQuality (QFD Matrix 2) OperationalCharacteristics Customer CTQs Customer Requirements House ofQuality (QFD Matrix 3) Process Requirements House ofQuality (QFD Matrix 4) Functional Requirements Design Characteristics Functional CTQs Technical CTQs System CTQs ControlCTQs Requirements Breakdown CTQ = Critical-To-Quality

  8. Requirements Breakdown

  9. Allocation

  10. The Original Fitts’ List, 1951

  11. The Original Fitts’ List, 1951

  12. http://www.omgsysml.org/

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