module_2a_SC_charts_r1

module_2a_SC_charts_r1 - 2-1 CSCI 588Module...

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Unformatted text preview: 2-1 CSCI 588Module 22-2Input/Output Devices There are many equivalent devices- Plus compatible, can simulate others Some are more flexible/accurate for users/tasks- Equivalence may be only from the point of view of the software Many trade-offs in devices- Should be chose based on task, users, economics Device types- Input Devices many physical devices can provide similar logical functions- Output Devices2-3Input DevicesLogical Input Devices Locator (Indicate a position via mouse or arrow key) Pick (Select a displayed entity, e.g. selection button) Valuator (Supply a numerical value) Keyboard (Input a string or function key input) Button (Choose menu selection item)Physical Input Devices Voice (speech recognition) Keys Button (used with many pointing devices, multi-press is common) Keyboard (styles next) Programmable function keys (hardware, software, or template overlays Cursor keys (e.g. hjkl, or arrow keys)2-4KeyboardsSholes (QWERTY) Standard LayoutDvorak Layout minimized finger movementAlphabetic Aids search for novice users, but no much elseChords For example, courtroom recordersPoint of sale Customized keyboards/cash registers 2-5Standard vs. DvorakTraditional (standard) keyboard folklore: 1)design avoided mechanical key jamming2)the letters T-Y-P-E-W-R-I-T-E-R are all on the first row forease to salespersonsDvorak keyboard layout was designed to minimize finger movement (note the location of the vowels: A-E-I-O-U, and note Q & Z in the corners 2-6One-Handed Keyboard (for Mobile or Disabled Workers)www.frogpad.com2-7Input Devices (concluded) Swivel Pad (like arrow keys) Joy Stick (2D and 3D) Thumb wheels Track ball (low space needs) Mouse (multi-button) Rat (foot mouse) Digitized tablet (puck in rink, exact input with cross-hairs on mouse) Pen and tablet (natural input) Light pen (synchronized with scan lines) Touch screen Touch pad (overlay templates) 3D devices (data glove, other devices for moving in space) Gesture/movement sensitive (projection; you select items by moving Scanners, including text-to-speech Eye trackers Stylus on PDAs Trackpoint on laptops Have I forgotten any?See eye tracker products at http://www.naturalpoint.com/2-8Alphagrip.com2-9Input device example2-10Input device example 2http://www.naturalinteraction.com/2-11Input device example 32-12Input device example 4http://www.emsense.com/2-13Input device example 5Dance Your Work Away: Exploring Step User Interfaces, by Brian Meyers et al from Microsoft Research2-14Input device example 6NTT's Tangible-3D prototype...
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module_2a_SC_charts_r1 - 2-1 CSCI 588Module...

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