Homework: Do exercise <strong>11</strong>-9 Due date: 5/2 <strong>Chapter</strong> <strong>11</strong> <strong>Designing</strong> <strong>Interfaces</strong> <strong>and</strong> <strong>Dialogues</strong> Notes Interaction between a user <strong>and</strong> a system a. A dialogue reflects the sequence of interaction between a user <strong>and</strong> a system. An interface is a method by which users interact with information systems. b. Comm<strong>and</strong> language interaction is a human-computer interaction method where explicit statements are entered into a system to invoke operations. -Menu interaction is a human-computer interaction method where a list of system options is provided <strong>and</strong> a specific comm<strong>and</strong> is invoked by user selection of a menu option. -Form interaction is a highly intuitive human-computer interaction method where data fields are formatted in a manner similar to paper-based forms. -Object-based interaction is a human-computer interaction method where symbols are used to represent comm<strong>and</strong>s or functions. -Natural language interaction is a human-computer interaction method where inputs to <strong>and</strong> outputs from a computer-based application are in a conventional speaking language such as English. c. A drop-down menu is a positioning method that places the access point of the menu near the top line of the display; when accessed, menus open by dropping down onto the display. A pop-up menu is a positioning method that places a menu near the current cursor position. The process of designing interfaces <strong>and</strong> dialogues - is similar to that of designing forms <strong>and</strong> reports (outlined in <strong>Chapter</strong> 10). Thus, the design process is a user-focused activity that typically follows a prototyping approach. -First, you must gain an underst<strong>and</strong>ing of the intended user <strong>and</strong> task objectives by collecting initial requirements during requirements determination. -After collecting the initial requirements, you structure <strong>and</strong> refine this information into an initial prototype. -Structuring <strong>and</strong> refining the requirements are completed independently from the users, although you may need to occasionally contact users to clarify some issue overlooked during analysis. -Finally, you ask users to review <strong>and</strong> evaluate the prototype. -After reviewing the prototype, users may accept the design or request that changes be made. -If changes are needed, you repeat the construction-evaluate-refinement cycle until the design is accepted. Usually, several iterations of this cycle occur during the design of a single interface or dialogue. -The deliverables produced from the process are design specifications that include a narrative overview, sample design, testing <strong>and</strong> usability assessment, <strong>and</strong> outline of dialogue sequence. Some specification information may be irrelevant when designing some systems. For example, for a simple system, using common modules, the design may be so straightforward that no usability assessment is needed. Also, much of the narrative overview may be unnecessary unless it is used to highlight some exception that must be considered during implementation.
- Page 2 and 3: Methods for interacting with a syst
- Page 4 and 5: The general sections of a typical b
- Page 6 and 7: Three types of system feedback -inc
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