Long before Spanish colonization, the indigenous people of Peru kept track of important dates and numbers, and perhaps even stories, using a mysterious coding system of strings and knots called a ...

An Inca quipu (khipu) used for storing data with a system of knots. 15th century CE. Larco Museum, Lima. Credit: Claus Ableiter (CC BY-SA) An Inca quipu (khipu) used for storing data with a system of ...

Long before computers existed, the Inca people collected data and kept records using knotted strings known as quipu. That technology has inspired a new system for assessing gastrointestinal problems, ...

For more than a millennium, many Andean peoples used an object called a "khipu" (also spelled "quipu" and pronounced "key-poo") to record and communicate information. Khipus were made with cords or ...