Quipu: The Talking Knots – 1st Millenium AD 

“Khipu” is the Quechuan and Aymara spelling variation of the word “quipu”, which means “knot” or “to knot”. Quipu is the traditional Spanish spelling of the word and the most commonly used.

https://weird-history-facts.com/quipu-the-talking-knots-1st-millenium-ad/