Function

• What are the two categories of functions in a product design specification?

  Primary and Secondary functions
• What distinguishes primary functions from secondary functions in product design?

  Primary functions are vital for the design to perform its job, while secondary functions are important but can be compromised.
• What is the primary function of a kettle?

  To boil and pour water safely
• What are the secondary functions of a kettle?

  • Indicate level of water
  • Cordless
  • Water filtration
  • Power indication
  • Keep warm
• What are the primary functions of a mobile phone?

  • Make telephone calls
  • Send text messages
  • Portability
• What are the secondary functions of a mobile phone?

  • Camera
  • Take/play video
  • Social networking
  • Games
  • Internet
  • Apps
  • Wireless technology