MIE240H1 Study Guide - Midterm Guide: Action Selection, Autothrottle, Floor And Ceiling Functions
21 Apr 2016
School
Department
Course
Professor
Document Summary
Fitts law: movement time: a+b(log2(2a/w)), depends on how far away, how wide, and how fast you move. Discrete: labels = close to control, shape should be compatible with function; feedback should indicate state change (toggle button), multiple modes; size is good. Direct position controls: touch screen, stylus. Indirect velocity controls: mouse, joystick, cursor keys. High gain = fast movements, low gain = precision. Chording keyboards: faster, less likely to get repetitive stress injury, but requires extensive knowledge. Word confusion, limited vocab, constraints on speed, interference of noise, compatibility with spatial tasks. Purpose: to have an object that represents the design and simulates the appearance and behaviour of the final design. Good for: preliminary testing, something to communicate clearly with stakeholders, supports iterative design, able to get buy-ins from management or sell the idea. Low fidelity: static, no details, text descriptions, fast and easy to make, supports iterations.
