What's Out There for Handheld Math?

PowerVegetable asks: "What's the story with handheld computation? Not address books and schedule reminders; I'm talking about the type of stuff computers were invented for. Anyone who's used Mathematica or Maple knows what desktop computers are capable of these days math-wise, but handheld computation seems to have fallen behind on the innovation front. Cell phones and handheld game systems have certainly enjoyed rapid advancement, so where are the handheld mathematical portable oracles? What's available that doesn't have obscure menu systems, bad displays, underpowered processors and unwieldy programming languages? Pickings are slim in the hard-coded calculator industry, but what about Pocket PC's or other programmable portables? Is there any portable solution out there that's more capable than my old HP49g?"

As far as the state of 'handheld math' goes,

[Mordant]

I can add and subtract numbers less than or equal to ten with no problems!

Handheld Math Device of Choice

[Chris Tucker]

Depending upon my whim and need for accuracy past a few decimal points, either my Pickett Microline 120 [ozmanor.com] or my TI SR-40 [devidts.com].

Why, yes. As a matter of fact, I am an old fart. Why do you ask?

Re:As far as the state of 'handheld math' goes,

[Ratbert42]

Learn binary math. I can do 10-bit and sometimes 20-bit math (or even 21-bit if it's not too cold).