When is a pocket calculator more than just a calculator? [Andrew Menadue] has been pushing the limits of his 1970s Casio FX-502P by adding all sorts of modern functionality via the calculator’s ...

Form is temporary, function is permanent. The most important inventions are the ones that relate to the human condition, and they crop up over and over again. Below, Houston shares five key insights ...

If you spend any time around technology, and probably even if you don’t, then you’ll probably also have heard some variation on the saying, “There’s more computing power in your pocket than was used ...

You’ll find the Comfy JT-200T’s solar panel on its top edge instead of crowding its screen and buttons. You’ll find the Comfy JT-200T’s solar panel on its top edge instead of crowding its screen and ...

Back in 1980, Casio released a musical, game-playing calculator cleverly named the MG-880. Apparently, kids went wild for the thing, playing a mini Space Invaders-inspired game with just numbers on ...

Empire of the Sum: The Rise and Reign of the Pocket Calculator. By Keith Houston. W.W. Norton & Company; 384 pages; $32.50. To be published in Britain in October; £25 WHEN WAS the last time you used a ...

Why it matters: Casio has introduced a modern version of its iconic calculator watch, itself based on the Casio Mini personal calculator first released in the early 70s. The new creation is a blast ...