5. WHAT IS HUMAN
“Human-Computer Interaction is a discipline
Concerned with the design, evaluation and
implementation of interactive computing system for
human use and with the study of major
phenomena surrounding them”
6. HISTORY
1945- MEMEX by Vanevar Bush.
1963- SketchPad and Light Pen by Ivan Sutherland.
1964- Mouse by Douglas Engelbart.
1973- Alto by Xerox PARK.
1983- Apple Lisa.
1987-Windows.
7. HUMAN
1
1 2
2
Visual Channel
Auditory Channel
Movement
Sensory Memory
Working Memory
Long-Term Memory
Humans are limited in their capacity to process Information.
This has Important Implication for Design.
RECEIVED AND RESPONSES INFORMATION STORED
9. Computer
There is not much difference in Human and Computer.
Computer consist of
Input Devices
Output Devices
Memory
Processing
Computer can be Mobile,
Spacecraft Cockpit, Microwave oven or VCRs etc.
10. INTERACTION
HCI is Concerned With joint performance of Task by Human
& Computer.
Communication between the User and The System
Physical Interaction
Interaction Devices
Conceptual Interaction
Interaction Styles
12. GOALS
“It is a measure of the effectiveness, efficiency
and satisfaction with which specified user can achieve
specified goals in a particular enviroment ”
A usable System is:
Easy to Learn
Easy to Remember how to use
Effective to Use
Effcient to Use
Safe to Use
Enjoyable To Use
14. Perceptual processor
THE MODEL HUMAN PROCESSOR
The model human processor consists of three interacting
system. Each has its own memory and processor.
Cognitive processor
Outputs into audio storage
Outputs into visual storage
Outputs into working memory
Has access to:
Working memory
Long term memory
15. THE MODEL HUMAN PROCESSOR
Motor processor
Carries out action
Human Information Processing
Information Processing Capabilites
Cognitive Requirement of Various Tasks
Characterize the informationprocessing of a user
Three Main Cognitive Challenges
Conceptual Complexity
Memory Load
Attention