calculator on technabob...

USB numpads are nothing new, but IDEA Japan’s 10 Key also functions as a calculator, so it’s… lemme calculate that… yep, twice as useful.

Those who want their peripherals to blend in with the rest of their computer will be glad to know that the 10 Key also comes in black and white.

Call it a case of life imitating software: a designer at Mintpass recently showed off a couple of designs for calculators that look exactly like the calculator apps in Windows and in OS X.

The Mac version has a metal case and a 2-liner LCD screen like its software counterpart, while the Windows calculator sports…

Do the guys in your company’s accounting department give you the creeps? Maybe it’s because they’re spying on you with their calculators.

That’s right, this ordinary looking Casio LCD desktop calculator has been retrofitted to conceal a tiny little video camera, perfect for snooping on your unsuspecting office buddies in between math equations.

From the…

If you think that a bunch of old calculators isn’t as interesting as a collection of old toy robots, well you’re mostly right. A calculator is useful – hell, even an abacus is more useful than a toy robot -  but it’s also one of the most boring gadgets ever. It calculates. End of story.…

Help your kid be more interested in math – or at least in using calculators – with the “building block” calculator by Homade. It comes in four colors, red, blue, green and black. I don’t know if the blocks are separable though. It would be cooler if you could actually extend the functionality of the…

Got one of those Texas Instruments graphing calculators? This nifty little program for  TI-83+SE, TI-84+, and TI-84+SE calculators lets you play Nintendo Game Boy games instead of doing your math problems.

Written by Brendan Fletcher (aka “calc84maniac”), TI-Boy SE is a Game Boy emulator that runs on TI’s Z-80 based graphing calculators thanks to similarities…

Introduced in the early 1980s, three models from HP’s much-loved 10c series calculators get a savvy transition to the 21st century with their iPhone app counterparts. The 12c and the 12c Platinum are both financial calculators, while the 15c – an out of production calculator so in demand 2nd hand units sell for as much…

Casio’s limited edition calculator watch is so nerdy it should be a character in The Big Bang Theory. Fortunately, it has been infused with G-Shock toughness, which somewhat offsets its bully magnet looks. Available in 4 nerdtastic colors, it has data storage capabilities and a calculator, as well as a currency converter and a calendar.…

This might look like an ordinary calculator on the surface, but if you dig deeper, you’ll discover that this oddity from Japan not only can do math, it can tell you and your significant other what your future will hold. If you believe that sort of thing, of course.

Just punch your date of birth…

One of the rarest bits of gadget history you can find, this beautiful specimen of the highly collectible Hewlett-Packard HP01 LED calculator watch is available for auction over on eBay. There’s just over 2 hours left in the auction so if you want to get your geek on, you’d better get your bids in fast!…

I can’t decide what I like best about this “unique” calculator from Japan. I’m torn between the keyboard that’s arranged into a completely non-standard configuration that’s sure to trip up even the speediest touch-typists, or the calculator’s oh-so-special random crash mode.

The Takumi CRASH Calculator apparently is designed to crash itself when it feels like…

Let me start by saying that I’m really looking forward to playing in the virtual sandbox of the upcoming Little Big Planet for the PS3 when it hits stores later this month. But I could never imagine building something as amazingly intricate as this.

PlayStation 3 fanatic Upsilandre spent countless hours building this incredible calculator using…