Compare the difference between using the RTI interrupt to control the analog-to-digital converter sampling time with using the polling routine to control the analog-to-digital converter sampling times. Solution RTI interrupt to control the ADC converter will start convirsion process whenever there will be data available as per real time inturrupthandling A. An interrupt is an event that stops the current process in the microcontroller so that it can attend the task needing completion because of the event. In Polling routine control - ADC with a polling-based program (non-interrupt driven) continuously polls or checks is there any data available to process or not. The polling based method to control converter sampling time is less efficient in nature..