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Interactive Screen Design Dr. Merle P. Martin CSU Sacramento Agenda Screen Structure Interactive Tactics Dialogue Modes Menus Form-filling Screens Common Screen Considerations Screen Structure Greeting Screen Password Screen Main Menu Intermediate Menus Function Screens Form-filling Transaction update Structure (Continued) Help screens (Pull Down) Escape options Quit Main Menu Last screen Figure 14-1, page 434 Interactive Tactics Allow users to escape quickly easily Keep users from getting lost “You are here” Ease transaction throughput We are not entertainers Dialogue Modes Inquiry “Are you sure ……” augments other dialogue modes Command Language experienced user shortcuts Menus (for navigation) Form-filling Screens Menus Elements, Fig. 14-3, pg. 430 Option sequence logical (new, update, delete) frequency of choice alphabetic Number options (6 to 8) Option Modes Lists scroll down Hot Keys mnemonic Command Buttons Windows listing options Defaults Form-filling Screens Looks like off-line form same sequence shade fields to be entered Cycle until user chooses to exit Minimize transaction throughput Minimizing Transaction Throughput Cueing (entry format) Autoterminate Free-form entry Default values constant (e.g., System Date) from record (e.g., Item Price) last transaction (e.g., Cust #) Common Screen Considerations Highlighting (< 10%) color reverse image flashing auditory Colors (don’t overdo) LeCourier Chart, pg.415 Screen Considerations Symmetry unless there’s a reason Input verification Screen density Relative screen clutter Tied to throughput Total and Local Total Screen Density % screen with non-blank characters (# char) / (screen capacity) should be < 25% can achieve on form-filling screen dimming unused screen portions highlighting screen portions blocking out with windows Local Screen Density Mean clutter around each character How to reduce symmetry minimize capital letters limit punctuation blank lines between text lines minimize words used Goodbyte Pizza Company Figures 14.1-3 through 14.1-5, page 456 Design Main Menu Design Delivery Screen Concepts to Remember Screen Structure Interactive Tactics Menus Form-filling Screens Common Screen Considerations Information Density