# Problem Run the demo program with a delay of 100 milliseconds in the loop and observe what happens when a full cycle of a rectangular wave takes 1.6 seconds to complete. This can be done with `delay_tenths_ms(1000)`. ## 1. What happens when the switches are set to `0b1111`, or 15 in decimal? ## 2. What is the duty cycle (in percent) when the switches are set to `0b1111`? # Process ## 1. When the switches are set to `0b1111`, or 15 in decimal, the LEDs don't flicker. ## 2. ... # Answer ## 1. The LEDs don't flicker. ## 2. 100% duty cycle.