A quipu was used by the Inca civilization as a system of record-keeping and communication. It consisted of colored, knotted strings that conveyed numerical and other information through the position, color, and type of knots. Quipus were used to keep track of population data, tax records, and other administrative information.
dilute ethanoic acid is used as a preservative in the preparation of pickles.it is used for making cellulose acetate which is an important artificial fibre.it is used in the manufacture of acetone and esters used in perfumes.it is used in the preparation of dyes.it is used to coaggulate rubber from latex.it is used for making white lead which is used as a white paint.it is used as a chemical reagent in chemistry lab.
In much the same way as sound is used in music, food is used in cooking, and soil is used in agriculture.
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The invention is Quipu..
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the incas used the quipus to keep records
The Inca's used the quipu to record numbers since they didn't have a form of writing. The quipu is a system of strings and knots used to represent numbers so that the Inca's wouldn't have to write down anything.
A Inca Quipu is a string with many knots used to record information as there was no system of writing during the Inca empire. The strings were often colored to represent something.
As a writing system to record information about the ruler
* Quipu or Khipu were recording devices used in the Inca empire. It consisted of coloured spun and plied strings from Illa or Alpaca hair or cotton cords with numeric and values encoded by knots in a base 10 positional system.
Inca's
The Inca used the quipu, a system of knotted strings, primarily for record-keeping and communication. It served as an accounting tool to manage resources, track census data, and document transactions. The quipu allowed the Incas to efficiently organize information across their vast empire, where written language was not utilized. Additionally, it helped convey messages and maintain administrative control over their territories.
Catherine Mutz has written: 'Quipu' -- subject(s): Incas, Quipu, Antiquities
They used a group of knotted strings called a quipu. The varying knots in a quipu represented different place values, making it easy to count crops or populations or anything that could be numbered in this way.