How did the Inca keep record?

The Inca civilization employed a unique system called quipu to keep records. Quipu consisted of colored, knotted strings that conveyed numerical and categorical information, with different knots and their placements representing various data points. This system allowed the Incas to manage everything from census information to agricultural records efficiently, despite lacking a written language. Additionally, trained officials known as "quipucamayocs" were responsible for creating and interpreting these intricate devices.