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Control and process

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SE sem 6th GTU

Published in: Technology
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Control and process

  1. 1. CONTROL AND PROCESS<br />BY:-ARPIT SHAH(08-CEG-45)<br /> ANKUR SHAH(08-CEG-44)<br />
  2. 2. Topics<br />
  3. 3. Analysis<br />
  4. 4. <ul><li>Bridge between the system description and the design model.The system level description that describes overall system functionality as it achived by applying software,hardware,data,human etc….Software design that describes the software application.</li></li></ul><li>Elements of analysis model<br />
  5. 5.
  6. 6. Three primary objectives<br />To describe ehat customer require.<br />To establish a basis for the creation of a software design.<br />To define a set of requirements that can be validated ance the software built.<br />
  7. 7. Flow-oriented element<br />
  8. 8. Data-flow model<br />DFA takes an input-process-output view of system.<br />That is data objects flows into the software,are transferred by processing elements and result data objects flow out of the software.<br />The DFA is presented in a hirarchical fashion.<br />
  9. 9. Hierarchical DFA<br />The 1st data flow model(sometimes called as a level 0 DFA or context diagram) represents the system as a whole.<br />Subsequent data flow diagram refines the context diagram providing increase detail with each subsequent level.<br />
  10. 10. Level of DFA<br />
  11. 11. Context level DFA<br />
  12. 12. Level 1 DFA<br />
  13. 13. Level 2 DFA<br />
  14. 14. Control flow model<br />A large class of application are “driven” by events rather than data,produce control information rahter than reports or display,and process information with heavy concern for time and performance.<br />
  15. 15. Level 1 CFD<br />
  16. 16. State diagram for CFD<br />
  17. 17. Control specification<br />It represents the behaviour of the system in two different ways.<br />State diagram that is a sequential of behaviour.<br />A program activation table that is a combinatorial specifaction of behaviour.<br />
  18. 18. Control specification<br />It describes behaviour of the system,but it gives us no information about the inner working of the process that are activated as a result of this behaviour.<br />
  19. 19.
  20. 20. Process specification<br />The process specification is used to describe all flow process that appear at the final level of refinement.<br />It includes narrative text,PDL description of process algorith,mathematicaleqation,tables etc…..<br />
  21. 21. Process specification<br />By providing it,ypo can create a “mini-spec” that is serves as a guide for design of the software component that will implement the bubble.<br />
  22. 22. PAT<br />
  23. 23. Difference between control and process<br />The PAT represent information containrd in the state diagram in the context of process not state.<br />
  24. 24. THANK YOU……<br />

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