From: Herman Dekker
Date: 2016 Sep 17, 15:34 -0700
I see you as one traditional man, with most interest in battery free systems and solutions.
But the smiley ;-) was not explaning enough i think.
I prefer only calculators that work years on a standard battery.
I use TI-30X-pro and TI-89 with starpilot.
I have one old Palm Treo with five celestial programs, but have to reload it every week.
Wel have a nice day.