Example: Power Consumption Relationships in Hiker’s Buddy

• GPS states:

  • Off
  • On (~15 hours battery life)

• PalmPilot modes:

  • Sleeping (> 30 days)
  • Idle (~2 days)
  • Running

• Serial Line states:

  • Closed
  • Open / Low power mode (assoc. with PalmPilot sleep mode)
  • Open (limits Pilot battery life to ~16 hours - short hike)

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