Okay, now I'm concerned-- battery change went too easy!
Confirmed that rpms and distance still weren't working. Changed out the sending unit's battery and still no rpms...
Changed out the computer and everything works fine. But, all my settings were still there... which was great although from what I saw on the net I apparently was to expect that all the necessary setup info would be required again because removing the battery would erase the data.
Anyone else notice that the data had been maintained in memory long enough to snap in a new battery (perhaps because the computer's battery was replaced before having gone completely dead)?
Did notice, however... when turning the pedal there's now a blinking arrow in the upper-left corner and symbol and I guess it is indicating that it's syncing or data is being transmitted. I don't remember seeing that in normal operation but maybe I just never noticed.