Bài thuyết trình môn Phân tích & thiết kế hệ thống - Đề tài: Human computer interface (HCI) - Nguyễn Thế Vinh
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Human Computer
Interface (HCI)
LEARNING OBJECTIVES
Understand human-computer interaction
01
Know how fit affects performance and well-being
02
Understand the technology acceptance model (TAM) and usability
03
Know how to design for individuals and persons with disabilities
04
LEARNING OBJECTIVES
Understand the different types of, and reasons for, using alternative
user interfaces
05
Design effective dialog for HCI
06
Understand the importance of user feedback
07
08
HCI và các trang Web thương mại điện tử
Formulate queries that permit users to search the Web
09
Human-Computer Interaction
Awareness of HCI
Attentiveness to issues of HCI
Existence of HCI in organizational settings
Need to master the concepts surrounding HCI
Guidelines for usability
Major Topics
Understanding human-computer interaction
Fit
TAM
Designing for cognitive styles of individual users
Physical considerations in HCI design
User interfaces
Dialog design
Feedback
Queries
Understanding Human-Computer Interaction
Knowledge about the interplay among users, tasks,
task contexts, IT, and the environments in which the
systems are used comprises the basis of human-compu
ter interaction
FIT
The “fit” between the HCI elements of the human, the computer, and the task that needs to be
performed leads to performance and well-being
Figure 14.1 The “fit” among the human, computer, and task
affects performance and well-being
Task
Complex tasks that require human, system, and task interaction are supported by ecommerce
and Web systems, ERP systems, and wireless systems inside and outside of the organization
Can be structured and routine or ill-defined and without apparent structure
Performance
A combination of the efficiency involved in performing a task and
the quality of the work that is produced by the task
Well-Being
Concern for a human’s overall comfort, safety, and health
Psychological attitudes are also important
The Technology Acceptance Model (TAM)
and Attitude
A way for analysts to organize their thinking about whether users will accept and
use information technology
Can be used to shape training after a system has been developed
Can be used to garner user reactions to prototypes
Examines perceived usefulness and perceived ease of use
The Technology Acceptance Model (TAM)
and Attitude ( continued)
Satisfaction
Anxiety
Enjoyment
Playfulness
TAM 1
Perceived Usefulness
External variable
Behavioral Intention
Usage Behavior
Perceived Ease of Use
Final version of Technology Acceptance Model (TAM) ( Venkatesh and Davis, 1996).
Usability
A way for designers to evaluate the systems and interfaces they create with an eye
toward addressing as many HCI concerns as thoroughly possible
Usability standards
Usability heuristics
Usability
Designing for Cognitive Styles of Individual Users
Making sure data is made available in different forms:
Tables
Graphs
Text
Different times
Pivot Tables
Allows a user to arrange data in a table in any way they choose
Gives users greater control over how they look at data in different ways within a table
Pivot Tables
Figure 14.3 A pivot table
template can make it easier f
or users to see information
displayed in different ways
Visual Analysis of Databases
Support visual thinking
Extend the user’s cognitive capabilities
Increase the changes of making an appropriate decision
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