Ryōichi Yazu, Date of Birth, Place of Birth, Date of Death

Ryōichi Yazu

Japanese inventor

Date of Birth: 30-Jun-1878

Place of Birth: Buzen, Fukuoka Prefecture, Japan

Date of Death: 16-Oct-1908

Profession: engineer, aerospace engineer

Nationality: Japan

Zodiac Sign: Cancer

Ryoichi Yazu (?? ??, Yazu Ryoichi, 30 June 1878 – 16 October 1908) was a Japanese inventor.
He is best known for his invention of Japan's first mechanical calculator.