8.4.3.1. Multiplexing

Try these first

1. 1.

   What is multiplexing in the context of 7-segment displays?

   Hint

   Think about how many displays can be illuminated at the same time.

2. 2.

   Name one benefit of using multiplexing.

   Hint

   Consider connections and wiring.

3. 3.

   What is the main purpose of multiplexing in 7-segment displays?

   • To save power
   • To control multiple displays with fewer pins
   • To increase visibility

   Hint

   Consider resource management.

4. 4.

   True or False: A human will notice flickering if a display switches too slowly.

   • True
   • False

   Hint

   Think about visual perception.

5. 5.

   Design a system using multiplexing to display a multi-digit countdown timer. Outline the GPIO configuration required and the logic needed to switch displays.

   Hint

   Consider time intervals and the speed of GPIO signal changes.

6. 6.

   Evaluate the trade-offs between using multiplexing and driving all displays simultaneously in terms of power consumption and visibility.

   Hint

   Think about user experience versus resource management.