8.7.3. Power Consumption

Try these first

1. 1.

   What is the purpose of using low-power modes?

   Hint

   Think about how devices save battery life.

2. 2.

   Name one strategy to save power when using GPIO.

   Hint

   What do you do with things when they're not in use?

3. 3.

   What is a primary benefit of using sleep modes?

   • Increased functionality
   • Reduced power consumption
   • Improved speed

   Hint

   Think about what happens when a device isn't being used.

4. 4.

   True or False: Multiplexing increases the average power draw of a display system.

   • True
   • False

   Hint

   Consider how many segments are lit at once.

5. 5.

   Design an application using a microcontroller with a 7-segment LED display and explain how you would minimize power consumption in both the display and GPIO.

   Hint

   Think of using your resources wisely during less active times.

6. 6.

   Evaluate a scenario where a power-sensitive application could benefit from using a low-power timer configuration. Explain your reasoning.

   Hint

   Consider what happens when you check a watch infrequently vs continuously.