Hi everyone. I'm looking for a decent calculator app for Mac OS X. What I'd like is an environment similar to that on a TI-83/TI-89 graphing calculator (without it being a direct emulator; I could do without the tiny little screen - that's why I've got a 15" laptop in the first place!). I'm happy with Calculator.app except for two things: there's no visible history of commands, and there's only one bloody memory for storing variables! I'd like to be able to just type: "a=5+3" "b=a*3+2" etc. It doesn't have to have commands any more complex than Calculator.app, I'd just like to see a big window with a history of commands and results and some "designed for a big powerful computer" type of functionality rather than emulating a $3 digital calculator. MATLAB and Maple come to mind (I used them in University) as applications that behave in a similar manner to what I'd like, but they're massive overkill for what I'd like them for.