An
illustration by Felipe Guaman Poma de Ayala ca 1580-1620 [?- precise date unknown]
depicting a Quipucamayoc- a Quipu master or keeper. The quipu was a corded
memory device using knots in the cords to represent numbers or items much as the
old idea of making a knot in a tie. As
far as is known the Inca had no form of writing