The quipu of the Incas was a system of colored knotted cords used to record numerical data, like advanced tally sticks – but not used to perform calculations.
ðə kwˈɪpuː ʌvðɪ ˈɪŋkəz wʌzɐ sˈɪstəm ʌv kˈʌlɚd nˈɑːɾᵻd kˈoːɹdz jˈuːzd tə ɹᵻkˈoːɹd nuːmˈɛɹɪkəl dˈeɪɾə, lˈaɪk ɐdvˈænst tˈæli stˈɪks bˌʌt nˌɑːt jˈuːzd tə pɚfˈɔːɹm kˌælkjʊlˈeɪʃənz.