Robert J. Lano, the inventor of the N Squared Chart, has condensed his 5 day advanced system engineering course into three books: Operational Concept Formulation (CONOPS/OCD), Requirements Analysis and Specification (System A Spec, System Architecture, ICDs), and the N2 Chart (interface analysis and definition) in order to improve the System Engineering processes associated with the front end system design activities of any government/ commercial program. These books all concentrate on clear, concise, and unambiguous methodologies to define the need, operations, concepts, requirements, interfaces, constraints, wording, and top level architecture partitioning of proposed systems from the definition of the initial User Need Statements (UNS) down through the development of the final top level System Specifications and Interface Control Documents. They have been successfully employed on space, ground station, Intelligence, city, and data base management systems for NASA, CIA, NSA, military and other organizations.
These books are intended for User Organizations, Customer/Buyer Organizations, Contractors, Hardware and Software Designers, System Integration and Testers, and System Maintainers. They apply to System Engineers, System Managers, System Administrators, Requirements Definers, System & Subsystem Designers, and Integration & Test Personnel.
They all emphasize graphical means to portray the requirements in order to eliminate misunderstandings, waffling, and promises not kept. The major graphical tools recommended include the Context Diagram, the Structure Chart, the N2 Chart, the Data State Design Chart, the R-Net, and the Data Function Flow Diagram (DFFD). Click on the following to see these chart examples for a simple subject called the automobile…….