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Chapter 5 Andrew Bates Jay Babb Steve Haroz. Introduction “Log Cabin” Analogy Design before Implementation.

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Presentation on theme: "Chapter 5 Andrew Bates Jay Babb Steve Haroz. Introduction “Log Cabin” Analogy Design before Implementation."— Presentation transcript:

1 Chapter 5 Andrew Bates Jay Babb Steve Haroz

2 Introduction “Log Cabin” Analogy Design before Implementation

3 Specification Methods Natural-language vs. formal/semiformal  Grammars Menu-tree Structures Transition Diagrams User Action Notation (UAN)

4 Grammars Backus-Naur Form (BNF) ::= ::=, ::= ::= | ::= A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z ::= ( ) - ::= ::= 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

5 Transition Diagrams Computer-Assisted Software Engineering (CASE) Complexity issues

6 User-Action Notation (UAN) User ActionsInterface FeedbackInterface State ~[file] Mvfile!, forall(file!): file-!selected = file ~[x,y]*outline(file) > ~ ~[trash]outline(file) > ~, trash! M^erase(file), trash!!selected = null

7 UI Building Tools UI Independence –Separate interface design from internals –Enable multiple UI strategies –Enable multiple platform support –Establish role of UI architect –Enforce standards

8 UI Building Tools (cont.) Methodology and Notation –Develop design procedures –Find ways to talk about design –Create Project Management Rapid Prototyping –Try out ideas early –Test, revise, test, revise… (iterative design) –Engage end users, managers, and customers

9 UI Building Tools (cont.) Software Support –Increase Productivity –Offer constraint and consistency checks –Facilitate team approaches –Ease maintenance

10 Design Tools

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