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可在安卓獲取Chanakya Abacus的歷史版本
Last updated on 2019年09月24日
It’s a most ancient mathematical instrument invented for basic calculation purpose like additions subtraction, multiplication, division, besides these now it is possible to calculate percentage, decimal, negative numbers & advance tool like square root on abacus. This is the best mathematical program used worldwide as complete brain development tool from last few decades.
Chanakya Abacus
2.1 by USHA VISHWA
2019年09月24日