Freddy San

user experience design usability storyboard human computer interactions models source code interpreter compiler assemblers programming language application development cpu technology clock rate architecture cpu intructions processor interaction redesigned prototype heuristics heuristic evaluation practical credibility black box system field study tasks standard task compare benefits plans problems controlled study vs. field study controlled usability reliability availability user research suggestions integration user research safe engagement requirements prioritization conceptual models conceptual task analysis use case system responsibility online facility booking system user needs user intention booking online booking watch improvement timepiece device similar devices user experience criteria what does it do requirements usability criteria use of numbers abuse of numbers data visualization decision statistics google glass dilemma aesthetic nest focus sproutling mobile payments contactless credit cards mental models pros & cons paper-based google maps metaphors electronic concepts atlas galaxy s6 samsung usability goals improvements interaction design user experience goals software development cen4722