As rightbyte said, RPN is an HP thing, so if you want an RPN calculator, ask for an HP. Most test administrators can help you.
Not anymore, that's why older engineers pay inflated prices for old ones on ebay.
Sadly my HP 48G is dead dead (water damage and corrosion) and they don't have a replacement for that.
Not anymore, that's why older engineers pay inflated prices for old ones on ebay.