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jan 1, 1300 BC - Invent de l'àbac

Description:

És un instrument per formular operacions matemàtiques. Se'l considera com el primer invent tecnològic i va ser creat a l'antiga xina en el 1300 BC

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2 Oct 2017

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Date:

jan 1, 1300 BC

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~ 3328 years ago

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