The yupana (Quechua for "counting tool") is a device used by the Incas, presumably as a type of calculator. Though some researchers have hypothesized how this implement might function like an abacus, others are less certain that it was used for this purpose. The 16th-century account of Spanish priest José de Acosta suggests that Incas may have possessed such a device: To see them use another kind of calculator, with maize kernels.

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  • La yupana, palabra quechua que significa "herramienta para contar") es un dispositivo usado por los Incas, presumiblemente como un tipo de calculadora. Aunque algunos investigadores han hecho hipótesis sobre cómo este implemento podría funcionar como un ábaco, otros tienen menor confianza en que hayan sido usadas para este propósito. El reporte del Siglo XVI del sacerdote español José de Acosta sugiere que los Incas podían haber tenido un dispositivo como éste: Plantilla:Quote Los investigadores creen que tales calculadoras están basadas en los números de Fibonacci para minimizar el número de granos necesarios por campo.
  • La yupana era un sistema di vasche inca di circa 30x20 centimetri di pietra o altro materiale, scolpite nella parte superiore in caselle geometriche in cui si ipotizza venissero posizionati fagioli, semi o sassolini. Lo studio sistematico della yupana cominciò nel 1869, con il ritrovamento nella provincia di Cuenca di un oggetto somigliante al disegno di Guaman Poma. Venivano utilizzate, fra le altre cose, sia come abachi di calcolo la cui funzione rimane tutt'ora un mistero, che come scacchiere impiegate per il gioco d'azzardo.
  • The yupana (Quechua for "counting tool") is a device used by the Incas, presumably as a type of calculator. Though some researchers have hypothesized how this implement might function like an abacus, others are less certain that it was used for this purpose. The 16th-century account of Spanish priest José de Acosta suggests that Incas may have possessed such a device: To see them use another kind of calculator, with maize kernels. In order to carry out a very difficult computation for which an able computer would require pen and paper, these Indians make use of their kernels. They place one here, three somewhere else and eight. They move one kernel here and there and the fact is that they are able to complete their computation without making the smallest mistake. as a matter of fact, they are better at practical arithmetic than we are with pen and ink. Whether this is not ingenious and whether these people are wild animals let those judge who will! What I consider as certain is that in what they undertake to do they are superior to us. Researchers believe that such calculators were based on Fibonacci numbers to minimize the number of necessary grains per field.
  • Юпа́на (кечуа yupana «счётное устройство») — разновидность абака, использовавшаяся в математике инков государства Тауантинсуйу. Существовало несколько разновидностей юпаны. Предполагалось, что вычисления на юпане осуществлялись на основе системы счисления с основанием 40, но некоторые исследователи склоняются к тому, что в юпане использовалась фибоначчиева система счисления, чтобы минимизировать необходимое для вычислений число зёрен.
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  • Юпа́на (кечуа yupana «счётное устройство») — разновидность абака, использовавшаяся в математике инков государства Тауантинсуйу. Существовало несколько разновидностей юпаны. Предполагалось, что вычисления на юпане осуществлялись на основе системы счисления с основанием 40, но некоторые исследователи склоняются к тому, что в юпане использовалась фибоначчиева система счисления, чтобы минимизировать необходимое для вычислений число зёрен.
  • La yupana, palabra quechua que significa "herramienta para contar") es un dispositivo usado por los Incas, presumiblemente como un tipo de calculadora. Aunque algunos investigadores han hecho hipótesis sobre cómo este implemento podría funcionar como un ábaco, otros tienen menor confianza en que hayan sido usadas para este propósito.
  • La yupana era un sistema di vasche inca di circa 30x20 centimetri di pietra o altro materiale, scolpite nella parte superiore in caselle geometriche in cui si ipotizza venissero posizionati fagioli, semi o sassolini. Lo studio sistematico della yupana cominciò nel 1869, con il ritrovamento nella provincia di Cuenca di un oggetto somigliante al disegno di Guaman Poma.
  • The yupana (Quechua for "counting tool") is a device used by the Incas, presumably as a type of calculator. Though some researchers have hypothesized how this implement might function like an abacus, others are less certain that it was used for this purpose. The 16th-century account of Spanish priest José de Acosta suggests that Incas may have possessed such a device: To see them use another kind of calculator, with maize kernels.
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  • Yupana
  • Yupana
  • Юпана
  • Yupana
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