Scientific calculators that have formula/equation memory

[grsbanks]

(12-06-2017 10:43 PM)pier4r Wrote:  DM42 (with a bit more effort to use programs as formulas).

If you're going to count the DM42 in there as a currently available machine with solver and integration abilities then you should also count the DM15/DM15L, which as we all know, is more or less a clone of the HP-15C but with more memory. Mine (M1B variant) reports 20 registers in use and 211 registers free after a reset.