Scientific calculators that have formula/equation memory

[jebem]

(12-06-2017 10:22 PM)pier4r Wrote:  

(12-06-2017 03:50 PM)jebem Wrote:  Now, a word of warning:
Continuous memory on all these machines, 35S included, are not really continuous as it depends on good battery energy to maintain the memory contents integrity.
Adding this to lack of input/output interface and we end up with seriously limited machines.
Even a reset to restore a machine crash will result in total memory loss.

Of course the continuous memory is there until one messes up the change of the batteries, therefore a calculator like that cannot be mistaken for a battleship one (like the 50g). Indeed they are useful for certain use cases.

Correction:
The Casio fx-5800p do not depend on the battery to maintain the memory contents, as it stores the user data on flash rom.
See page E-136 of the user manual.

"Our calculator uses flash memory to store data, so memory data is not lost when you remove the battery."