TIL that ancient numeral systems like Egyptian hieratic, Greek, Hebrew, Roman, Chinese, and early Indian Brahmi were all non-positional decimal systems, requiring large numbers of symbols. The world’s earliest positional decimal system was the Chinese rod calculus.

https://en.wikipedia.org/wiki/Decimal
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gn72kk/til_that_ancient_numeral_systems_like_egyptian/