Sunday, November 2, 2025

Quick Review: Casio fx-9910CW 2nd Edition

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Quick Review: Casio fx-9910CW 2 nd Edition The Casio fx-9910CW 2 nd Edition is an update of the fx-991CW first released in 202...
Saturday, November 1, 2025

fx-3650P and TI-68: Quadratic Equation and Arc Length between Roots of a Quadratic Curve

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fx-3650P and TI-68: Quadratic Equation and Arc Length between Roots of a Quadratic Curve Two approaches using two well-liked, classic ca...
Thursday, October 30, 2025

HP 67 Programs… Almost 50 Years Later

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  HP 67 Programs… Almost 50 Years Later Both downloads are in PDF format. This is for use for the HP 67 and its emulators, or really...
Saturday, October 25, 2025

Casio fx-991CW: Arc of a Quadratic Curve

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Casio fx-991CW: Arc of a Quadratic Curve All screen shots will be taken with the https://www.classpad.app/ website. Introduc...
Saturday, October 18, 2025

Numworks: Estimating the Speed of Sound in Water

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  Numworks: Estimating the Speed of Sound in Water Generally, the speed of sound in water is faster than the speed of sound in air. Is there...
Tuesday, October 14, 2025

HHC 2025 Videos

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  HHC 2025 Videos The talks from the HHC 2025 conference in Orlando, Florida are starting to be up on hpcalc’s YouTube page within th...
Saturday, October 11, 2025

RPN Calculators: INPUT vs PROMPT

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RPN Calculators: INPUT vs PROMPT Later RPN keystroke programming calculators are able to display alphabetic messages and store to varia...