QWERTY Keyboard
http://en.wikipedia.org/wiki/QWERTY_Keyboard

Dvorak Keyboard
http://en.wikipedia.org/wiki/Dvorak_keyboard

Maltron Keyboard
http://en.wikipedia.org/wiki/Maltron_keyboard

Chord Keyboard
http://en.wikipedia.org/wiki/Chord_keyboard

T9 (Predictive Text Entry for Mobile Phone)
http://en.wikipedia.org/wiki/T9_(predictive_text)

Graffiti (Palm OS) Handwriting Recognition System
http://en.wikipedia.org/wiki/Graffiti_(Palm_OS)

Speech Recognition
http://en.wikipedia.org/wiki/Speech_recognition
IBM ViaVoice http://en.wikipedia.org/wiki/IBM_ViaVoice

lecture46681831595.pdf

데스크톱 메타포(desktop metaphor)는 그래픽 사용자 인터페이스에 쓰이는 통일 개념의 집합이자 인터페이스로, 사용자들이 컴퓨터와 더 쉽게 상호 작용할 수 있게 도와 준다.^[1] 데스크톱 메타포는 컴퓨터의 모니터를 마치 사용자의 책상처럼 보이게 하여, 여기에다 문서, 파일 폴더를 놓을 수 있게 한다.

마이크로소프트 윈도 환경에서는 “바탕 화면”으로, 맥 OS X에서는 “데스크탑”으로 부른다.

lecture3-Understanding Interaction3096189377.pdf

•  Visibility – Know state of device and actions available
  
•  Feedback – Sending information back to the user about what action has been done and what has been accomplished
  
•  Constraints – Restricting the possible user actions that can be performed
  
•  Consistency – Design interfaces to have similar operations and use similar elements for achieving similar tasks
  
•  Affordance – Attribute of an object that allows people to know how to use it

• Know your user
  

  – This can be hard when your user group is very general

  
  
• Reduce cognitive load
  

  – This concerns designing so that users don’t have to remember large amounts of detail

  
  
• Engineering for errors
  

   – Engineering for errors includes forcing a user to prevent him or her from making an error or at least make it more difficult

  
  
• Maintain consistency and clarity
  

  – You can maintain consistency by using standard operations and representations and from using appropriate metaphors that help to build and maintain a user’s mental model of the system

•  Satisfying
  
•  Enjoyable
  
•  Fun
  
•  Entertaining
  
•  Helpful
  
•  Motivating
  
•  Aesthetically pleasing
  
•  Supportive of creativity
  
•  Rewarding
  
•  Emotionally fulfilling

can be broken down into the following goals:

• Effectiveness – How accurately and completely users can
  accomplish tasks
  
• Efficiency – How quickly users can complete tasks
  
• Safety – Avoid dangerous situations caused by interaction with
  technology
  
• Utility – Provide enough functionality for users to accomplish
  necessary tasks
  
• Learnability – How easy is it to learn to use technology
  
• Memorability – How easy is it to remember how to use a
  technology once you have learned how to use it

lecture2 – What is Interaction Design?2614738563.pdf

lecture13285849077.pdf