Ryōichi Yazu
(1878-1908)
Japanese inventor
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Ryōichi Yazu (矢頭 良一, Yazu Ryōichi, 30 June 1878 – 16 October 1908) was a Japanese inventor. He is best known for his invention of Japan's first mechanical calculator.
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| Born |
1878
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| Died |
1908 (aged 29)
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