but make sure the backup battery is not low, or else you COULD lose all data!!! Bhuvanesh Bhatt. On Tue, 10 Dec 1996, Benjamin D Kohler-Crowe wrote: > >1) Is it true that when you take all the batteries out of the > >calculator, > >you loose everything that has been programmed into the calc? > > Only if you take out the main batteries and the backup batteries at the > same time. (That's why there's a backup battery!) :-) >