A demo of the TI Voyage 200 graphing calculator, which was effectively the same device as the TI 89 Titanium, but in a different form factor.
For more information about the TI Voyage 200 check out:
https://en.wikipedia.org/wiki/TI92_s...
https://www.ticalc.org/basics/calcula...
For more videos about modern and vintage calculators, check out my channel / calculatorculture