I have avoided translating to digital any of my measurements. I have used > and <, but no actual arithmetic. To go proportional per the PID, requires that I do arithmetic. HEX or digital, that is the question. I'd like to think in digital, may I?

I'm going to reveal my age. I wrote in machine language on the IBM 370 back in the last century. Well back in the last century. Since then it has been C, C++, shell, tcl. I am used to having a large library backup and writing in a modular fashion. Now it is PBP. I think I need to know more about ASM coding and the architecture of the PICs. What is the easiest (best) way to learn?

Ken