System Engineering Saranya.V AP/CSE,Sri Vidya College of Engineering & Technology, Virudhunagar
• All aspects of computer based systems development including hardware and software process engineering. – Usually use Waterfall model – Little scope for iteration between phases because hardware changes are very expensive. Software may have to compensate for hardware problems.
• Much scope for misunderstanding here.• Different disciplines use a different vocabulary and much negotiation is required.• Engineers may have personal agendas to fulfill.
System Definition• Simply known as functional unit. – Executes user written programs – Performs user designated manipulation – Includes arithmetic logic operations – Use common storage access. – associated software’s
• System engineering focuses on how complex engineering projects should be designed and managed.• Define customer needs and required functionality early in the development life cycle, documenting.
System engineering processSIMILAR:• State the problem(customer needs)• Investigate alternatives• Model the system• Integrate (bringing elements together)• Launch the system (output)• Assess performance (evaluation criteria)• Re-evaluation
Requirements System definition decommissioning System System design evolution Sub system System development installation System integration
• Interaction between engineering: – All major engg integration – Bioinformatics: • Biotechnology • Information technology • etc
System engineering hierarchy• Model: – Simplified representation of a system.• Simulation – Computerized version of a model• Modeling and simulation is a discipline for developing a level of understanding of the interaction of the parts of a system.
Hierarchy• World view – Public health care, e governance trade and commerce, banking & finance.• Domain view – Concentrate on specific domain – Education • College, school, etc• Element view – Focuses on sub domain(Admission,exams,etc)• Detailed view – (internal marks, university, internal…)
Modeling the system• Explains how the system is working.• Elements of system modeling: – Inputs – Processes – Outcomes.