1. Principles of HCI Design

2. Don't go to the right?

3. Where do you plug in the mouse?

11. Traditional Software Design
Waterfall model of software life cycle
Project Definition
Requirements Specification
Integration and system testing
Coding and Module testing
Functional Design
Module Design
Architecture Design
Operation and maintenance

12. User Centered Design There should not be a black box for the user!
The User SHOULD
Drive all user interface design decisions
Determine goals and set priorities
Agree upon all goals that will be used in designing the user interface

13. User-Centered Project Life Cycle
User/Task Analysis I
Set Usability Goals
Design Interface
Evaluate Designs
Build Prototype
Test Prototype
Test Okay?

14. Iteration is the key! No design will be perfect in the first time.
Interactive systems cannot be completely specified from the beginning of the life cycle.
Users need to be involved all the time.
Evaluation and testing should be done throughout the design process.
Design and testing should be repeated iteratively.
Prototypes, rather than real systems, can be used for testing.

15. How to Start? Intelligent Borrowing
Plagiarizing or Good Design Practice
Getting to Know Existing Frameworks
Guidelines and standards
IBM Web Design Guidelines (
Ameritech User Interface Standard(shttp:// www. ameritech.com:1080/corporate/testtown/library/standard/index.html)

16. Getting started Getting to Know Existing Frameworks Convention
User is already familiar with the process or arrangement from other interfaces
Most of user interface design requires designers to work within the tight constraints of existing designs

17. Studying existing applications
look at systems users already know
Copy interaction techniques
copy the style of menu selection, organization of screen elements, etc. (where appropriate)
Understand why design was done in the way it was done with the existing interface

24. Methods of Iterative Design
Scenario Generation
Choosing Representative Scenarios
Comprehensive
Critical Task
Random
Scenario Validation & Review
Key stakeholders first
Group reviews later

25. Methods of Iterative Design
Deriving Storyboards from Scenarios
Paper Prototyping
Explore constraints
Study standards & guidelines

26. Methods of Iterative Design
Building an interactive rapid prototype from a paper prototype.
Testing the Prototype with Users.
Iteration Control
Each iteration has a specific usability goals.

27. Prototype