So, it's time to change the batteries in my 17bii again, but I've reprogrammed more fantastic equations that I don't want to lose (like what happened to me the last time I changed the batteries). Does anyone know of a way to change the batteries in a 17bii without losing what you've stored in memory?
I looked for this topic in old threads, but didn't see where it had been discussed before.
Thanks in advance,
Brian