Week 6

• HCI


  A discipline focused on how graphical interfaces affect the interaction between computing technology and their users
• Usability evaluation

  • User
  • Task
  • Context
  • Interface
• Feedback loop


  The input/output cycle of how information is sent to a computing device
• Interaction


  A dialogue between the users through senses and the systems through their sensors
• Different I/O types are tailored for different types of tasks and physical and cognitive abilities
• I/O device appropriateness


  A factor to consider when designing HCI is whether the I/O device is appropriate for the given context
• I/O devices


  Can affect whether people achieve their goals or be detrimental to the experience
• Chosen I/O


  Must match the user's cognitive abilities and the task it is used for
• Input


  The main method through which instructions are issued to the computer
• Input device


  A device that transforms information into data that is processed by an application
• Input device requirements


  • Match the physiological characteristics of users
  • Be appropriate for the tasks and its environment
• Output devices


  Display information perceivable by a human
• Common output technology


  • Visual
  • Auditory
  • Motion-based
  • Tangible
• Speech recognition, while has made big leaps in progress, is prone to errors
• User-friendly interactive technology


  • Considers the design of the interface
  • Considers the interaction
• Considerations for designing interactive technologies

  • Motor skills
  • Strength
  • Disabilities
  • Height and reach
• Thought control


  Interact with a system using the mind
• Brain-computer interfaces


  A brain-computer interface designed to let a user control a computer or mobile device on the go