Chapter 25 Standards and Metrics Matthew Easton Standards - - PDF document

Nov 28, 2023 •445 likes •502 views

Chapter 25 Standards and Metrics Matthew Easton Standards - concern prescribed ways of discussing, presenting, or doing something, which seeks to achieve consistency across products of the same type + Generally make life easier + Assure a

Chapter 25 Standards and Metrics Matthew Easton ¥ Standards - concern prescribed ways of discussing, presenting, or doing something, which seeks to achieve consistency across products of the same type + Generally make life easier + Assure a certain level of quality ¥ Common Examples electrical wiring shoe sizes train tracks 1
Standards Organizations ¥ ISO (International Organization for Standardization) + Mechanical standards ¥ IEC (International Electrotechnical Commission) + Electrical standards ¥ JTC1- joint committee b/t ISO and IEC + Information technology standards ¥ ANSI (American National Standards Institute) ¥ BSI (British Standards Institution) Where else do standards come from? ¥ Governments + Ministry of Defense, FDA ¥ Professional bodies + IEEE, ASME ¥ Industry + Microsoft ¥ De facto standards + Qwerty keyboard ¥ House standards (house style guides) + Corporations 2
Why interface design standards? ¥ Common Terminology + Facilitates comparisons ¥ Maintainability and Evolvability + Maintain similar programs + Easy addition ¥ Common Identity + Same Ôlook and feelÕ ¥ Reduce Training + Standard command keys ¥ Health and Safety + Standard warnings for unexpected behavior ¥ ISO 9241 - addresses ergonomic requirements for work with Visual Display Terminals (VDTs); hardware and software + Task requirements + Keyboard requirements + Workstation layout + Postural requirements + Requirements for displayed colors + Environmental requirements ¥ EC Council Directive (1990) - addresses minimum health and safety requirements for work with display screen equipment + Legal requirement 3
¥ Metrics - numerical measures of the products and processes of software development + Analytic + Performance + Psychometrics ¥ Analytic + Paper-based products ¥ Performance + Duration + Count + Proportion of task completed + Quality of output ¥ Psychometrics + Users complete questionnaires about a prototype + Efficiency, Affect, Helpfulness, Control, Learnability 4

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