They’re relatively underpowered, and usually come with cheap, low resolution screens ... doing some interesting work with Python on their TI-83. Rumor has it that TI have been unable to get ...

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.