CIS 1250 Lecture 22: 20161109 Lecture 22

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 1250
• Professor: Luiza Antonie

Document Summary

Announcements: took up quiz 3 final exam will be a similar format. Feedback loop: a relationship between parts of system where consequences of an event are returned to the system and modify the event in the future. Positive feedback loops amplify effects, negative feedback loops dampen effects. Fibonacci sequence: a sequence of numbers in which each number is the sum of the preceding two. Figure-ground relationship: when you see a picture (or listen to music), you perceived certain features to be figures (foreground) or as ground (background), when images are not clear (or sound is noisy) is hard to make this distinction. Fitt"s law: the time it is required to move to a target is related to the size and distance of the target. Speed-accuracy trade-off: applicable to rapid pointing movements, not continuous activities, e. g. moving your mouse cursor to an icon target, actions to be generally avoided should be harder to perform, commonly accessed functions should be easily accessible.