CourseIntroduction 1
EvanGolub/BenBederson /SaulGreenberg
CMSC434/828s:HumanFactorsin
ComputerandInformationSystems
a.k.a.- IntrotoHuman-ComputerInteraction
EvanGolub
EvanGolub/BenBederson /SaulGreenberg
Dilbert
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Human Factor in Computer and Information System | CMSC 434, Study notes of Computer Science
Material Type: Notes; Professor: Bederson; Class: INTRO HMN-CMP INTERACTN; Subject: Computer Science; University: University of Maryland; Term: Fall 2002;
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Evan Golub / Ben Bederson / Saul Greenberg
CMSC 434/828s: Human Factors in
Computer and Information Systems
a.k.a. - Intro to Human-Computer Interaction
Evan Golub
Evan Golub / Ben Bederson / Saul Greenberg
Dilbert
Evan Golub / Ben Bederson / Saul Greenberg
Which talk would you go to?
Evan Golub / Ben Bederson / Saul Greenberg
Which graphic tells the clearer story?
The letters A through G represent chemicals. The numbers 1 though 10 represent crops. Black = Improved White = Got worse
images: Bob Waddington
Evan Golub / Ben Bederson / Saul Greenberg
Moore’s Law
1950 1990 2030
( These slides are variations of those presented by Bill Buxton )
Computer Abilities
Evan Golub / Ben Bederson / Saul Greenberg
History of HCI: Input / Output devices
Input / Output Early days connecting wires lights on display paper tape & punch cards paper keyboard teletype
“Modern” keyboard (different types) scrolling glass teletype cursor keys character terminal mouse (different types) bit-mapped screen (different types) microphone audio
“Bleeding Edge” computer vision head-mounted displays computer jewelry ubiquitous computing natural language implanted devices autonomous agents biometrics
If you asked someone to draw a computer, what parts would they draw? Would the CPU be among them?
- keyboards & terminals are just artifacts of today’s technologies
- new input/output devices will change the way we interact with computers
Evan Golub / Ben Bederson / Saul Greenberg
Psychology
Human Abilities
0 A.D. 1950 1990 2030
( These slides are variations of those presented by Bill Buxton )
Computers
Evan Golub / Ben Bederson / Saul Greenberg
For example, how do we create a menu?
Do we want a simple design or a complex design?
Should it be narrow and deep or should it be broad and shallow?
Some questions to ask:
- how many things can the typical user remember
- there can be speed advantages for expert users that have
learned where things are on a menu
- are there costs associated with loading a new page
- an application such as Microsoft Word
- how much memory does the machine have
- a series of web pages
- how much latency if there in the connection
- an application such as Microsoft Word
Evan Golub / Ben Bederson / Saul Greenberg
Cost to Fix a Problem
The time during development that you notice a change needs to be made
( These slides are variations of those presented by Bill Buxton )
C o s t o f c h a n g e
Evan Golub / Ben Bederson / Saul Greenberg
Foundations for designing interfaces
Overview
- Introduction to the course and to HCI
Understanding users and their tasks
- Task-centered system design
- the task-centered process
- developing task examples
- task scenarios and walkthroughs
Designing with the user
- User centered design and prototyping
- user centered system design
- low fidelity prototyping methods
- Evaluating interfaces with users: qualitative methods
- observe people using systems via various methods
- detect inappropriate design and correct by iterative design
Evan Golub / Ben Bederson / Saul Greenberg
Foundations for designing interfaces
Designing visual interfaces
- Psychopathology/psychology of everyday things
- what makes visual design work?
- Beyond screen design
- representations and metaphors
- Graphical screen design
- the placement of interface components on a screen
This is a great design!
Evan Golub / Ben Bederson / Saul Greenberg
Foundations for designing interfaces
Principles for design
- Design principles, guidelines, and usability heuristics
- general design guidelines
- using guidelines as heuristics to discover usability problems
- High-level models of human-computer behavior
Implementing Graphical User Interfaces (GUIs)
- Java, Visual Basic, etc.
Experimental design and HCI
- Evaluating interfaces with users: Quantitative methods
- experimental design
- controlled experiments
- statistics
The past and the future
- History of HCI
- Visions of the future
Evan Golub / Ben Bederson / Saul Greenberg
Text and additional references
Required text
- Designing the User Interface: Strategies for Effective Human- Computer Interaction, 3rd^ Edition , Shneiderman [Addison- Wesley], 1998.
Recommended texts / readings
- Will be posted to the web page and/or announced in class as the term progresses
Course web site:
- http://www.cs.umd.edu/class/fall2002/cmsc434-
Evan Golub / Ben Bederson / Saul Greenberg
Readings for the week:
- Shneiderman: Designing the User Interface - Chapter 1
- Norman: The Design of Everyday Things - Chapter 1 (handout)