$1.$ You can use ROR instruction to move between seven segment displays? How many ROR instruction you used and why?

$2.$ Write a pseudo algorithm for ARM assembly that can simulate a traffic signal with LEDs. Consider the first LED as Green, second one as yellow and third one as red.

$3.$ You can use NOP instruction and loop to simulate a delay function. Write a pseudo algorithm that with changing one parameter we can change the delay function. $($Hint: you can use $.$equ pragma$).$