The Incas had a system of accounting that relied on the quipu. Cords of various colours were attached to a main cord with knots. The number and position of knots as well as the colour of each cord ...

From the quipu to the conquistadors, writer Rob Rath talks about cool stories we couldn't quite squeeze into the series, as ...

People living in Congo’s Ishango ... knew how to read the information recorded on quipus, much less record information themselves. Among the Inca, these individuals were known as ...

For more than a millennium, many Andean peoples used an object called a "khipu" (also spelled "quipu" and pronounced ... they ...

While much of the world used stone tablets or other media that didn’t survive the centuries, the Incas used something called quipu which encoded numeric data in strings using knots. Now the ...