CORRECTION: this device was actually invented by Al-Khwarizmi (780 – 850 AD) in Baghdad, Iraq. His name Latinized as 'Algorithmi'. He has been described as the father and founder of algebra.The word 'algebra' itself comes from the title of his book "al-jabr" meaning 'completion'.
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Al-Khwarizmi's name gave rise to the term 'algorithm'. It is also the origin of (Spanish) 'guarismo' and (Portuguese) 'algarismo', both meaning "digit".
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It actually originates with Bosnian mathematician Matrakci https://en.m.wikipedia.org/wiki/Lattice_multiplication#Derivations …
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The value of 7×8 is given as 54. It should be 56, unless I am missing something.
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That's correct! It seems an error in the image.
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or just use a calculator smh
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The 16th Century computer would be using the bones anyway.
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You can see some abacus with such bones in Madrid, at archeological museum.http://www.man.es/man/coleccion/catalogo-cronologico/edad-moderna/abaco.html …
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You could also use Lattice Multiplication for multiplying 2 polynomials w/ one variable if the process of long multiplication seems to be too tedious for students.
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Is it based on a Babylonian method that is like a multiplication of vectors (<- modern concept and term)?
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