Advantages of napier's bones
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slips of ivory or other material divided into sections marked with digits, devised by John Napier and formerly used to facilitate multiplication and division.
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Answer:Napier's Bone's was founded in 18th century. John Napier of Merchiston, Switzerland created the manual operating device for the calculation of products and quotients of numbers.
This method was used for calculation which was based on lattice multiplication. In this, addition operations are reduced from multiplication & subtraction from division. Left edge of the board is divided into 9 squares i.e- 1-9. Rabdology is the another name for this technique. Its first version was published in 1617.
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