counting rod
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Etymology
Noun
counting rod (plural counting rods)
- (mathematics) One of a set of small bars, used by mathematicians in some Asian countries, placed either horizontally or vertically to represent any number and any fraction.
- [1983, Rongzhao Mei, “The Decimal Place-Value Numeration and the Rod and Bead Arithmetics”, in 中国古代科技成就 [Ancient China's Technology and Science] (China Knowledge Series), Beijing: Foreign Languages Press, →ISBN, →OCLC, pages 58–59:
- In recent archaeological excavations a number of ancient counting-rods have been unearthed. More than 30 rods were found in August 1971 in Qianyang County of Shaanxi Province.]
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