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The Abacus is ancient and the inventor of the original is unknown. Lee Kai Chen did however invent an improved abacus with a movable decimal point and two auxiliary fields for use in complex operations. This abacus was named after himself.

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Q: Is Lee Kai Chen the inventor of Abacus?
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Related questions

What is the name of inventor of abacus?

Unknown, it was before written history. however lee kai chen invented an improved version with decimal points.

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Lee Si-Chen was born in 1952.

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