Human Computer Interaction

© 2014 Project Lead The Way, Inc.Computer Science and Software Engineering

• How humans and computers communicate

• Input devices: keyboard, mouse, touchscreen

• Output devices: screen, speakers

Human Computer Interaction

• Haptics–Use sense of touch for output–Use grip pressure as input

• Motion and location sensors• Face recognition

–Conveying emotion/intent• Use of ambient conversation• 3-D images• Gesture detection• Brain scanning or electrodes

Future of HCI?

User Interface Design• Arrangement of controls and the

layout and presentation of information

• Navigation through menus

AccessibilityAre some people prevented or hindered from using a resource?

• Language• Technology• Disability

Extending Human Capabilities

• Prosthetics: Manufactured devices to replace a body part

• Enhanced hearing and vision

Virtual Reality

• User experiences “being” somewhere else

Ergonomics

• Design for the human body and health

• HAZARD: Sitting can strain the back–Stretch frequently–Use good posture

• HAZARD: Use can injure the hands –Avoid repetitive strain injuries

by attending to your hand positions

–Vary mouse and keyboard motions

• Structure: Related elements together• Simple: Common tasks streamlined• Visible: Easy to find controls and information• Feedback: User knows if something worked• Tolerance: User can undo mistakes,

input not required to be overly precise• Reuse: Design consistent across UI

HCI Design Principles