…This was due to weaknesses in the mechanical design and insufficient machining precision, which could not be solved with the technology of the time. Practical hand-cranked calculators were commercially produced in 1820 by Charles Xavier Thomas and in 1875 by Frank Stephen Baldwin. In Japan, Yato Ryoichi applied for a patent for a hand-cranked calculator based on his own concept, the Automatic Abacus, in 1902, and manufactured and sold several hundred units in the following few years. … *Some of the terminology that mentions "Baldwin, FS" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…それは,機械設計上の弱点と加工精度の不十分さとに起因していて,当時の技術では解決できなかったのである。実用的な手回し計算機は,1820年にトーマスCharles Xavier Thomasや,75年にボールドウィンFrank Stephen Baldwinなどによって商業的に生産されるようになった。 日本では,1902年に矢頭良一が独自の構想による手回し計算機〈自働算盤〉を特許出願し,その後数年間に二百数十台を製造・販売した。… ※「Baldwin,F.S.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
<<: Bale, B. (English spelling) BaleB
>>: Baldus de Ubaldis (English spelling)
The country's territory stretches from the so...
Immunoglobulin. A general term for antibodies and ...
Born: April 21, 1920, Venice [Died] November 13, 1...
An industrial method for producing sodium hydroxid...
Italian painter active in the mid-15th century. Da...
Year of birth: Year of birth and death unknown. A ...
A city in central Osaka Prefecture. It was incorpo...
…Both are called tear gases, and are stimulants a...
…In the case of Imazaike Village, Gamo County, Om...
〘 noun 〙 To be crushed to death by a strong force....
…In 1307 (Tokuji 2), he moved to Kamakura at the ...
…[Mayumi Takahashi]. . . *Some of the terminology...
What is the disease? Shoulder pain that occurs af...
...This is because a person may have multiple sea...
Severe abdominal pain that often occurs periodical...