Hmmmmmm....Interesting response. I came to this forum because it was suggested by a response from a member on a CNC forum. Also, if you do a search for GRBL on this forum, you will find many, many questions related to GRBL (just not exactly my question). My question has more to do with electronics and how microcontrollers work than GRBL specifically. Also, I have gotten a lot of electronics help on this forum even though my questions did not always pertain to programming.
If I have misinterpreted your response, I apologize.