what? At 04:44 PM 8/21/97 -0500, you wrote: >I was just thinking about something: the expander and the extender (not >sure about this one) use AA batteries to power them. Why not just use >regular memory and a lithium battery like the calc itself? You could >write to it infinite times and it would not "wear out". One lithium is >not much more than a set of AAs. > >