What technologies did the Inca have?

The incas had a special rope called Quipu that hangs down and is tied to colorful different ropes, all of the ropes represent one thing; for example one rope would represent a day or event.

The incas also used the quipu as a math calculator. We still don't know how the process was of using it but they say that the İncas were great at math, using the Quipu.