Very good business calculator
from Anonymous on 30/10/2013
I use the HP-12c at work, and so far - I've only used it a couple of weeks - it's great. Previously I've used HP-30b but some of its keys stopped working after a couple of years. I find RPN input essential in order to enter calculations quickly, and in addition to that, the keyboard layout is also well designed. I've tried to program it and though the memory is constrained, it's quite easy.