PRODUCT ERGONOMICS     & SAFETY          CHAPTER:          USABILITY          NURUL IKHMAR IBRAHIM  SCHOOL OF MANUFACTURIN...
TODAY’S TOPICUsability Concept    Principles of     Designing  & Definition      Usable Design    Usable Product
USABILITY IS HOW EASY A  PRODUCT IS TO USE
DEFINITION BY ISOThe effectiveness, efficiency and     satisfaction with which  specified users can achieve  specified goa...
The extent to which agoal or task isachieved with theproduct.Does it do what the usersneed and want?                      ...
Theamount ofeffort required toaccomplish a goal.How long does it take touse a product?How many errors that auser make befo...
The level ofcomfort andacceptability ofthe product to its usersas a means to achievetheir goals.How pleasant is it to uset...
WHY?    USABILITY IS IMPORTANTUSABILITY CONCEPT & DEFINITION
Usability dependent on: WHO is using the product.            PERSON-PRODUCT INTERACTION
Usability dependent on: The  GOAL        that they are trying to achieve.         PERSON-PRODUCT INTERACTION
Usability dependent on: The ENVIRONMENT in which the product is being used.         PERSON-PRODUCT INTERACTION
USABILITY FRAMEWORK
TODAY’S TOPICUsability Concept    Principles of     Designing  & Definition      Usable Design    Usable Product
THERE ARE 10 PRINCIPLES    OF USABLE DESIGN**Jordan, Patrick W. (2002) An Introduction to Usability. Taylor & Francis Ltd.
1:CONSISTENCYDesigning a product so that similar tasks are done insimilar way.E.g. layout of controls in car (position of ...
2:COMPATIBILITYDesigning a product so that its method of operation iscompatible with users’ expectations based on theirkno...
3:CONSIDERATION                            OF      USER RESOURCESDesigning a product so that its method of operationtakes ...
4: FEEDBACKDesigning a product so that actions taken by the userare acknowledged and a meaningful indication isgiven about...
5: ERROR PREVENTION     & RECOVERYDesigning a product so that likelihood of user error isminimized and so that if errors d...
6: USER CONTROLDesigning a product so that the extent to which theuser has control over the actions taken by the productan...
7: VISUAL CLARITYDesigning a product so that information displayed canbe read quickly and easily without causing confusion...
8: PRIORITIZATION OFFUNCTIONALITY & INFORMATIONDesigning a product so that the most importantfunctionality and information...
9: APPROPRIATE TRANSFER         OF TECHNOLOGYMaking appropriate use of technology developed inother contacts to enhance th...
10: EXPLICITNESSDesigning a product so that cues are given as to itsfunctionality and method of operation.E.g. doors in pu...
TODAY’S TOPICUsability Concept    Principles of     Designing  & Definition      Usable Design    Usable Product
THERE ARE 6 STEPS INDESIGNING A USABLE     PRODUCT
STEPS IN DESIGNING A       USABLE PRODUCT*                                   Identify                   Establish     Iden...
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Usability

  1. 1. PRODUCT ERGONOMICS & SAFETY CHAPTER: USABILITY NURUL IKHMAR IBRAHIM SCHOOL OF MANUFACTURING ENGINEERING UNIMAP
  2. 2. TODAY’S TOPICUsability Concept Principles of Designing & Definition Usable Design Usable Product
  3. 3. USABILITY IS HOW EASY A PRODUCT IS TO USE
  4. 4. DEFINITION BY ISOThe effectiveness, efficiency and satisfaction with which specified users can achieve specified goals in particular environments. ISO DIS 9241-11 USABILITY CONCEPT & DEFINITION
  5. 5. The extent to which agoal or task isachieved with theproduct.Does it do what the usersneed and want? EFFECTIVENESS
  6. 6. Theamount ofeffort required toaccomplish a goal.How long does it take touse a product?How many errors that auser make before a taskis completed? EFFICIENCY
  7. 7. The level ofcomfort andacceptability ofthe product to its usersas a means to achievetheir goals.How pleasant is it to usethe design? SATISFACTION
  8. 8. WHY? USABILITY IS IMPORTANTUSABILITY CONCEPT & DEFINITION
  9. 9. Usability dependent on: WHO is using the product. PERSON-PRODUCT INTERACTION
  10. 10. Usability dependent on: The GOAL that they are trying to achieve. PERSON-PRODUCT INTERACTION
  11. 11. Usability dependent on: The ENVIRONMENT in which the product is being used. PERSON-PRODUCT INTERACTION
  12. 12. USABILITY FRAMEWORK
  13. 13. TODAY’S TOPICUsability Concept Principles of Designing & Definition Usable Design Usable Product
  14. 14. THERE ARE 10 PRINCIPLES OF USABLE DESIGN**Jordan, Patrick W. (2002) An Introduction to Usability. Taylor & Francis Ltd.
  15. 15. 1:CONSISTENCYDesigning a product so that similar tasks are done insimilar way.E.g. layout of controls in car (position of clutch, breakand accelerator)
  16. 16. 2:COMPATIBILITYDesigning a product so that its method of operation iscompatible with users’ expectations based on theirknowledge of other types of products and the ‘outsideworld’.E.g. handphones with physical keys and touch screen
  17. 17. 3:CONSIDERATION OF USER RESOURCESDesigning a product so that its method of operationtakes into account the demands placed on the users’resources (5 senses) during interaction.E.g. watching TV while driving.
  18. 18. 4: FEEDBACKDesigning a product so that actions taken by the userare acknowledged and a meaningful indication isgiven about the results of this action.E.g. tail lights on car
  19. 19. 5: ERROR PREVENTION & RECOVERYDesigning a product so that likelihood of user error isminimized and so that if errors do occur they can berecovered from quickly and easily.E.g. cancel button on ATM machine.
  20. 20. 6: USER CONTROLDesigning a product so that the extent to which theuser has control over the actions taken by the productand the state that the product is in is maximized.E.g. adjustable chairs.
  21. 21. 7: VISUAL CLARITYDesigning a product so that information displayed canbe read quickly and easily without causing confusion.E.g. labels for controls on product.
  22. 22. 8: PRIORITIZATION OFFUNCTIONALITY & INFORMATIONDesigning a product so that the most importantfunctionality and information is easily accessible tothe user.E.g. buttons on control panel on dashboard.
  23. 23. 9: APPROPRIATE TRANSFER OF TECHNOLOGYMaking appropriate use of technology developed inother contacts to enhance the usability of a product.E.g. remote control.
  24. 24. 10: EXPLICITNESSDesigning a product so that cues are given as to itsfunctionality and method of operation.E.g. doors in public buildings.
  25. 25. TODAY’S TOPICUsability Concept Principles of Designing & Definition Usable Design Usable Product
  26. 26. THERE ARE 6 STEPS INDESIGNING A USABLE PRODUCT
  27. 27. STEPS IN DESIGNING A USABLE PRODUCT* Identify Establish Identify main effect of each characteristics goal(s) characteristics & relevance Testing / Review Ensure correct prototyping compliance design*Source: EASE OF OPERATION OF EVERYDAY PRODUCTS - PART 1: DESIGNREQUIREMENTS FOR CONTEXT OF USE AND USER CHARACTERISTICS(MS ISO 20282-1:2009)
  28. 28. Thank You
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