Eddie's Math and Calculator Blog

Retro Review:   hp 9g Quick Facts: Model:  hp 9g Company:  Hewlett Packard Years:  2003 (short production life) Battery:  2 x AR76 or 2 x LR...

Happy Halloween and Happy Birthday, HP 42S The HP 42S calculator was released to the market on October 31, 1988.   I also want to wish you a...

 Paco Arjonilla:  HP 35S Program Suite On today's blog post, I am going to highlight a recent suite of programs, written by Paco Arjonil...

HP 71B and TI-84 Plus CE:  Binary Decimal Conversions Revised The programs presented can easily convert integers without the needs of lists ...

Plus42 Solver: Derivatives  Introduction The Technical Applications book for the HP 27S and HP 19B (and can apply to the HP 17B outside of t...

Retro Review:   Texas Instruments Financial Investment FIA-10 Possibly a predecessor to the well known BA-II Plus, the FIA-10 introduced fin...

  Unlike a kilobyte, that is 1,000 bytes, a kibibyte has 2^10 bytes.    Happy programming, Eddie

HP 71B, TI 84 Plus CE:  Egyptian Fractions to Unit Fractions by the Greedy Algorithm Introduction  An Egyptian fraction consists of a sum of...

HP 71B, TI 84 Plus CE:  Sum of Egyptian Fractions Introduction  An Egyptian fraction consists of a sum of unit fractions.  A unit fraction i...

TI-65:  Relativity Applications Introduction The programs on today's blog entry were programmed on the Texas Instruments TI-65 calculato...

Swiss Micros DM42, Free42, Plus42:   FUNC command Turning Programs into User Functions The FUNC command saves the stack contents and treats ...