| Keyword | Definition |
|---|---|
| control | the decisions and calculations your device needs to make as it runs |
| input | the data your device will collect or measure |
| output | the way your device will display or log its results |
| physical artifact | a device which interacts with the real world |
| purpose | what your device needs to be able to do |
| stakeholder | the person or people who will use your device |