Tag Archives: calculator

Canon Multi 8 square root bug

Posted on April 28, 2010 by admin

Square root bug in the vintage Canon Multi 8 a.k.a. palmtronic MD-8 hand held calculator. A very nice example of a semi rare vintage calculator. It is unique in that way it is considered the first two line hand held … Continue reading →

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The Human Calculator with numbers 4 and 9

Posted on April 25, 2010 by admin

The Human Calculator is back with 2 new numbrs to show off his amazing skills. Requested by criz4217. Sorry it took so long to put on youtube. Duration : 0:5:15

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Gentic Calculator

Posted on April 22, 2010 by admin

This is a Genetic Calculator using the online game engine ‘ROBLOX’ and some major skills. It is a large punnete square, with the left set of switches reprenting alleles ‘a’ and ‘b’ of the first trait and the top set … Continue reading →

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The Astounding Curta Mechanical Calculator

Posted on April 16, 2010 by admin

Witness the jaw-dropping ingenuity of this fascinating hand-held mechanical calculating machine. Duration : 0:6:43

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Inside Your Calculator by Dr. Gerald R. Rising

Posted on April 13, 2010 by admin

Dr. Gerald R. Rising, Distinguished Teaching Professor Emeritus, SUNY University at Buffalo, discusses calculating the square root by Newton’s Method in his new book, Inside Your Calculator. Dr. Rising was invited guest lecturer in the Department of Mathematical Sciences, SUNY … Continue reading →

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Square roots – The forgotten way!

Posted on April 10, 2010 by admin

So you thought that ancient electronic calculators can’t do square roots? You were wrong! I’ll here demonstrate how to do a square root on the vintage Sharp EL-801 a.k.a. Sharp Elsi Mini calculator. Of course it would be a little … Continue reading →

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Planning your Square Foot Garden with the Fantastic Farm & Garden Calculator

Posted on April 7, 2010 by admin

If you use the Square Foot Gardening method, this short video shows you how to use the Fantastic Farm & Garden Calculator http://www.landshareco.org to plan your garden or micro-farm. Duration : 0:3:30

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Linear Regression (Curve Fit) on a TI Calculator

Posted on April 4, 2010 by admin

Texas Instruments Linear Regression demonstrated on a TI-83 Plus (should work on most TI calculators). Sorry about the poor audio sync. Duration : 0:6:26

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Square roots on the Odhner.

Posted on March 29, 2010 by admin

This is an example, you can find the theory and the operation procedures in www.mechrech.info/anleit/GibBru.pdf (-pag 35- in English) or in www.teclas.org/documentos.php?art=A0078&pg=9 (in Spanish). I have used the English procedure despite the Spanish version requires less crank turns, but is … Continue reading →

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My Dry-Erase Board And A Math Trick!

Posted on March 26, 2010 by admin

How to square a number that ends in 5. Without a calculator. Duration : 0:1:56

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