CS 66-460
Introduction to Graphical Human Machine Interfaces
Design Guidelines and Usability Heuristics
WEDNESDAY, FEBRUARY 26, 1997
Instructor: G. Bowden Wise
Rensselaer Polytechnic Institute
Spring 1997
{
Design guidelines are broad ``rules of thumb''
Heuristic evaluation
Advantages
Problems
Good graphic design and color choice
Remove or hide irrelevant or rarely needed information
Use windows frugally
use meaningful mnemonics, icons, abbreviations
0.1 secs: perceived as instantaneous 1.0 secs: user's flow of thought stays uninterrupted, but delay noticed 10.0 secs: limit for keeping user's attention focused on the dialog 10+ secs: user will want to perform other tasks while waiting
Good error messages
Prevent errors