Revisiting the TI-81 - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: Not HP Calculators (/forum-7.html) +--- Forum: Not remotely HP Calculators (/forum-9.html) +--- Thread: Revisiting the TI-81 (/thread-13769.html)

Revisiting the TI-81 - Eddie W. Shore - 10-06-2019 03:15 PM The TI-81 is not quite as feature full as the HP 28C, however it was the calculator that got me into graphing calculators. Part 1: (10/5/19) Differences between the TI-81 and TI-84 Plus Binary/Decimal Conversions Quadratic Equation http://edspi31415.blogspot.com/2019/10/fun-with-ti-81-part-i.html Part 2: (10/6/19) Decimal to Fraction Simple Logistic Regression Confidence Interval Fresnel Polarization Hyperbolic Circles http://edspi31415.blogspot.com/2019/10/fun-with-ti-81-part-ii.html RE: Revisiting the TI-81 - Nad - 11-21-2019 05:43 AM I remember it fondly. Bought it at the end of 1991 and wrote a program to convert matrices to reduced row echelon for my Linear Algebra class in university. Still have it and use it.