FIT3175 Lecture Notes - Lecture 2: Usability, Collaborative Software, Icon Design

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FIT3175: Usability
Week 2: Human Aspect of Usability
User Interfaces
Evolution
1950 : switchboards, limited interacon
1960-70: Interface at programming level, punch cards for storage
1970-1990 - Interface at a terminal level, command languages
1980 - Interface at interacon dialogue level - GUIs, Mulmedia
1990’s - Interface at work seng - networked systems - groupware
2000’s - interface becomes beyond interacon with individual user to provide an interface to
shared compung environment
2010’s -
Interface Metaphors
Metaphor : describe overall concepts within which objects and acons are organisaon
Help users think about screen objects as they would about real-world objects
Exploits a users familiar knowledge in order to understand the unfamiliar
Recognise the imagery and will understand the purpose
Mental models :
People have have mental models of how things work, based on previous exisng knowledge
and experience
Helps specify and describe metaphors
Advantages
Allows learning by analogy - using previous knowledge of the world
Can add interest and make applicaons accessible to wider variety of users
Disadvantages
Aren’t enough good metaphors to go around
Cultural boundaries
Interface Icons
Pictorial image used to represent features and commands
Can reduce the complexity of a system
Types of icon’s representations:
Based on a metaphor
Direct mapping (printer looks like printer literally)
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