Best Calculators for Rpn

it has a multitude of functions, and the ability to switch between rpn and arithmatic modesis a big plus.

the only drawback is, if you had any of the previous models of rpn calculators ( i had the 42s), you were kinda used to certain key locations (the enter key) you now have to search for it, also

as far as i know it is the only rpn calculator you can buy (not counting those dorky graphing models).using this calculator just makes you feel good.

it has an algebraic mode as well as rpn, but the only reason you should buy this calculator at all is if you want to use rpn.

it might not graph, it might not perform symbolic math, it might not use rpn or have a precision-engineered keypad with double-injection-molded keys -- and above all it's certainly not a computer --

1) it is simple, fairly light and quite fast (75 mhz clock speed), algebraic equation operating system (eos), but not with hp rpn, but not bad for the money since the hp 39gs units are now on sale

a couple of things i love about hps are the rpn input notation and the great tactile feedback of the buttons.

any engineer who went through school using one knows that an hp rpn calculator is a "real" calculator!)