What is usability?
Usability is a quality attribute that assesses how easy user interfaces are to use.
* The word ‘usability’ also refers to methods for improving ease-of-use during the
design process.”
( learnability, efficiency, memorability, errors, and satisfaction )
What is a good place to start thinking about how to design usable interactive products
By Comparing good and poor designs Through identifying the
specific weaknesses and strengths of efferent interactive products
What are Five quality components of usability?
learnability: easy to learn in the first use
memorability: easy to remember how to use
efficiency: efficient to use (quick )
satisfaction: pleasant and enjoyable to use
errors: contains few errors. – recover from errors
What is Accessibility?
Accessibility is a quality attribute of the product that allows people with a
diverse range of hearing, movement, sight, and cognitive ability issues to
use a software.
Types of Accessibility
- People who cannot see well.
- People who cannot hear well.
- People who cannot perform (mobility).
- People who cannot learn at the same pace.
WCAG
Web Content Accessibility Guidelines
POUR accessibility principles
- Perceivable.
for example, so people can see the content, or hear it. - Operable:
for example, so people can use the computer by typing, or by voice. - Understandable.
for example, so people get clear and simple language. - Robust.
for example, so people can use different assistive technology
