Eddie's Math and Calculator Blog
It's all about mathematics and calculators
Saturday, August 29, 2026
The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S
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The MU Key on a Four Function Calculator and Programs for the DM42/HP 42S Not too long ago, I purchased this very colorful, four funct...
Guest Post: Why Kids (and Adults) Are Rediscovering the Abacus in the Age of Calculators by The AbacusTool Team
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Today’s post is a guest post by The AbacusTool Team, and it is about discovering mathematics by using the time-honored tool, the abacus. I ...
Saturday, August 22, 2026
Python (TI-84 Evo) and HP 32S: Shannon-Wiener Diversity Index
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Python (TI-84 Evo) and HP 32S: Shannon-Wiener Diversity Index Introduction The Shannon-Wiener Diversity Index measures a leve...
Wednesday, August 19, 2026
Spotlight: HP 16C Collector’s Edition
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Spotlight: HP 16C Collector’s Edition Quick Facts: HP 16C Collector’s Edition Model: HP 16C Collector’s Edition Company: ...
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