1. Human Computer Interaction
Week 1
Introduction to Human Computer Interaction

2. Contacts
Hartarto Junaedi, SKom., MKom.

3. Syllabus Introduction to HCI Users User Interface Design
Human-Computer Dialogue
Interaction Devices and Input-Output
Interaction Design Support
Prototyping
Evaluation
Usability Concept
Web Usability
E-Commerce Site Design
Information Search and Visualization
Multimedia Interface Design
Groupware and CSCW

4. Assessments Assignment: 30% Mid-Term Examination: 30%
Final Examination: %

5. References
Preece, J. et-al. 1994, Human-Computer Interaction, Addison-Wesley, Wokingham
Dix, A, Finlay, J., Abowd, G. & Beale, R , Human-Computer Interaction, 3rd ed., Prentice Hall, New York

6. Why HCI? The Changing Computing Environment
In the 1950/60s
Computing resources were expensive
Computers operated by highly trained professionals
In the 1990/2000s
Computing resources are cheap
Computers are operated by non-computer experts

10. Visibility and Affordance
Two principles that help to ensure good HCI (Norman 1988, 1992):
Visibility: Controls need to be visible, with good mapping with their effects.
Affordance: Their design should also suggest (afford) their functionality.

11. History of HCI 1970’s: User Interface, or Man-Machine Interface (MMI)
Those aspects of the system that the user comes in contact with.
An input language for the user, an output language for the machine, and a protocol for interaction.
1990’s: HCI, with broader focus
A discipline concerned with the design, evaluation, and implementation of interactive computer systems for human use and with the study of major phenomena surrounding them.

12. The Challenge of HCI
The advances of technology brings two important challenges to HCI designers:
How to keep abreast of changes in technology.
How to ensure their design offers good HCI.

13. The Goals of HCI Increase individual & organizational productivity
Reduce health hazards and improve safety
Reduce costs associated with the development of user interfaces
Usability is the main concept in HCI
Usability is concerned with making systems safe, easy to learn and easy to use

14. HCI Milestones
Xerox Dynabook (early 1970s): book-sized PC with a high resolution color display and a radio link to a world-wide computer network.
Xerox Star (later 1970s): Personal Workstation, desk-sized, used by one individual.
Apple Lisa (Early 1980s): Smaller, cheaper, and more powerful version, developed by Apple.

15. The Importance of HCI Example: Retrieving Information
The total time it takes to retrieve a piece of information is the sum of
(1) the time for the user to formulate the search,
(2) the time it takes for the computer to find and display the information on the screen
(3) the time it takes for the user to interpret the information displayed
Improved search algorithms may yield 10% improvement in system performance
Improved interfaces may yield 10 times improvement in user performance

16. Factors in HCI User Organizational Environment Health and Safety
Comfort
User Interface
Task
Constrains
System Functionality
Productivity

17. Supporting Disciplines in HCI
Computer Science
Psychology
Software Engineering
Ergonomics
Cognitive Science
Artificial Intelligence
Social Science

18. Designing HCI User Centered Involve users as much as possible
Integrate knowledge and expertise from different disciplines
Highly Iterative The design does indeed meet users’ requirements

19. Further Reading
Preece, chapter 1, 2