A home-brewed graphing calculator called Open SciCal promises to put a powerful machine built entirely from open-source hardware into the pockets of quant jocks and statisticians.

Portal’s physics engine rebuilt in 25KB—on a graphing calculator A student's years of coding work allows us all to calculate with portals.

You can put away your Texas Instruments graphing calculators, kids. Microsoft’s bringing that capability to the Calculator app within Windows 10, as part of a new Insider build.