1. cs3724: Introduction to HCI
Dr. Chris North
GTA: Beth Yost

2. WELCOME TO THE NEXT LEVEL

3. “Toto, I don’t think we’re in 2604 anymore.”
Class discussion, participation
HWs/Projects: open-ended
Group project
Student presentations

4. Course Mechanics Prerequisite forms: Texts: http://courses.cs.vt.edu
2604: CS >=C, ECE >=C-, else >F
Texts:
Usability Engineering, by Rosson & Carroll
Teach yourself Java2 in 21 days, SAMS (optional)
Office hours: after class, 619 McB
GTA hours: T Th 10-noon, 133 McB ?

5. Grading 25% Homeworks (4) 5% Class presentation 40% Project
30% Exams (midterm, final)
Project: java, groups of 2 students
Project milestones:
Design
Initial implementation
Usability evaluation
Final implementation

6. ??? What is it? Who cares? Why is it hard? How does it work?
What will I learn?

7. What is HCI?

8. Human-Computer Interaction
What is HCI?
Human-Computer Interaction

9. Human-Computer Interaction
What is HCI?
Human-Computer Interaction
Design
Development
Evaluation
of user interfaces
for computer systems

10. Huh?
An example:
HomeFinder

11. Apartments.com

12. Hit List

13. HomeFinder

14. The Goal
Usability
People are trying to accomplish their tasks in life. (system independent)
Introduce a system, User Interface should maximize their ability.
task
person
system

15. Who Cares?
Everything is a User Interface

16. Doors

17. More Doors

18. Communication Channels
System to human:
Human to system:
system,
world

19. Who Cares? Everything is a User Interface
The User Interface is Everything

20. Florida Cares!
Human error: Who’s fault is it?
                                                                                                                                                                                      

21. Why is it so hard?

22. Programmers stink at Usability
Why is it so hard?
Programmers stink at Usability

23. Programmers stink at Usability
Why is it so hard?
Programmers stink at Usability
don’t think like normal people
know the software internals, technology first
enjoy systems more than people
arrogant (my software!)

24. Usability is hard People (users) are all different
People are unpredictable
Design skill isn’t enough
Evaluation with users is required
Designer’s pride
New ways to think, break out of the box

25. How does it work? Usability Engineering Design Evaluate Develop
many iterations

26. What will I learn? Principles Requirements Activity design
Information design
Interaction design
Design
Evaluate
Develop
Usability evaluation
Controlled experiments
GUI programming
Widgets, graphics, animation
Java, Swing
Data-driven applications

27. Grander Goals? Get angry! Mental shift: Break out of the box
From system-centered design to user-centered design
Break out of the box

28. Homework #0: UI Measurement
Read UE ch 1
See website
Pick a movie of your choice
Task: find a convenient playing time and location
Use 3 different systems:
TELL
Write down the time it takes you for each
Bring your times to class on Wed