But if you can’t justify a $150 calculator, there are some cheap and even free options out there to get the experience. To start with, HP has a free app that runs on Windows or Mac that works ...

Before the iOS 18 update, the built-in iPhone calculator functioned well as a basic calculator. But if you needed advanced ...

Why not spruce up the scientific calculator of yore with the wonders of modern microcontrollers? While you won’t be able to use Sci-Calc on a standardized test, this classy calculator will let ...