Check out these emulated calculators at the Internet Archive
I never thought I’d actually have fun with a calculator emulator. But here I am, toying with the old-school graphing calculators that the Internet Archive has freed from their plastic chassis and put in a digital form for all to enjoy.
The Internet Archive calls this new collection the Calculator Drawer. There are 14 calculators to choose from, including the HP 48GX, TI-82, TI-83 Plus, and even the Electronic Number Muncher, which is an 80s-era toy calculator. The Internet Archive doesn’t just emulate the interface of each device, either; it incorporates their physical design and buttons, making it feel like you have the actual device right in front of you.