"A critical step was made sometime before the ninth century AD, when a new partial script was invented, one that could store and process mathematical data with unprecedented efficiency. This partial script was composed of ten signs, representing the numbers from 0 - 9. Confusingly, these signs were known as Arabic numerals even though they were first invented by the Hindus."
January 1, 1970
https://en.wikiquote.org/wiki/Mathematics