By default, you will first view the standard calculator used for math problems we face in our daily life. Click on the menu from the top-left corner of the screen and select ‘Graphing.’ ...

Rather than just cramming the Pi and a cheap LCD into his Numworks graphing calculator, [Zardam] integrated it into the device so well that you’d swear it was a feature from the factory.

You can leave the TI graphing calculator at home thanks to this web-based TI-83 and TI-84 emulator. As with pretty much all emulators, this depends on a ROM image from the actual hardware to work.