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User and System Interfaces Cheat Sheet by

Designing the User and System Interfaces
processes     management     project     schedule     pmbok     work     planning     training     risks     status-     progress     stakeholders

User Centered Design

User is the last judge of the quality of a system. Ie will it help them perform their task?
Principles of User Centered Design:
1. Focus early on users and their work
2. Evaluate designs to ensure usability
3. Use iterative develo­pment

Use Cases and the Menu Hierarchy

Menus are a typical way to organize access to use case functi­onality
Different menus for different actors
Useful to design an overall menu hierarchy and then subsets for different users

System Inputs

Primary Objective is Error Free Input
Use electronic devices wherever possible
Avoid human involv­ement as much as possible
If inform­ation is already available in electronic form, use it instead of re-ent­ering inform­ation
Validate and correct inform­ation at time and location entered
Device Examples
Magnetic card strip readers, bar code readers, optical character recogn­ition, radio frequency ID tags (RFID), touch screen, electronic pens, digiti­zers, speech recogn­ition
 

Metaphors of Human Computer Intera­ction

System Outputs

Detailed reports: specific inform­ation on business transa­ctions
Summary reports: summarize detail or recap periodic activity
Exce­ption reports: provide details or summary inform­ation about transa­ctions or operating results that fall outside a predefined normal range of values
Exec­utive reports: used by high level managers to assess overall organi­zat­ional health and perfor­mance
Internal outputs produced for use within the organi­zation
External output­s­pro­duced for use by people outside the organi­zation. Statem­ents, notices, stockh­older reports. Higher quality, color, reflect image of organi­zation
Turn­around docume­nts external outputs that includes one or more parts intended to be returned with new data or inform­ation. Bills with remittance vouchers
 

User Interface Design Guidelines

Design for Consis­tency
Provide Shortcuts
Provide Feedback
Dialogs Should Yield Closure
Error Handling that Provides Guidance
Easy Reversal of Actions
Reduce Short Term Memory Load

Guidel­ines: Web Browser User Interfaces

Cons­ist­ency
Cascading Style Sheets (CSS) – Web page encoding standard that enables a Web site designer to specify parts of a page that will always look the same and parts that will vary by task or audience
Perf­ormance Consid­era­tions
Sensitive to network connec­tion, amount of inform­ation transm­itted, type of inform­ation transm­itted
Pict­ures, Video, and Sound
Powerful, but compat­ibility issues arise

Dialog Design

For each use case, think of the natural flow of a dialog between user and computer
Based on the flow of activities in use case descri­ption or activity diagram
Use natural language to dialog with user
Create a storyboard of the dialog, showing the sequence of sketches of the screen each step of the dialog. (story­boa­rding)
Review the storyboard with users

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