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Updated: April 16, 2024 by History Computer Staff | Leave a Comment
Key Points Henry Pottin In the middle 1870s, the French engineer Henry Pottin patented the first key-set crank-operated machine and made the […]
History of Computers and Computing, Mechanical calculators, 18th century, Du Bois D. Parmelee’s key adder Du Bois D. Parmelee In 1850 […]
History of Computers and Computing, Mechanical calculators, 19th century, Maurel and Jayet The arithmaurel of Maurel and Jayet In 1841 in […]
Who Was Willgodt Odhner? Willgodt Odhner was a Swedish inventor and engineer. He invented a mechanical calculator and founded a […]
Who was Wilhelm Küttner Friedrich Wilhelm Küttner (1841-1920), a German businessman from Burgk bei Potschappel (near Dresden), chose to spend […]
Updated: July 27, 2023 by Abby | Leave a Comment
: Manipolatore Aritmetico of Niccola Guinigi (Created with the expert advice of Mr. Silvio Hénin, Milan, Italy) In the 1850s (or even […]
: The Adding Device of Kummer Several people experimented with versions of simple mechanical calculators that involved strips of metal with […]
: George Grant’s Calculating Machines Between 1872 and 1898, the American George Barnard Grant (see biography of George Barnard Grant) of […]
History of Computers and Computing, Mechanical calculators, 19th century, Joseph Edmondson : Joseph Edmondson’s circular calculating machine In 1883 Joseph Edmondson from […]
: The Ternary Calculating Machine of Thomas Fowler During the 1830’s the Englishman Thomas Fowler (see biography of Thomas Fowler) became […]
Pafnuty Chebyshev Pafnuty Lvovich Chebyshev (Пафнутий Львович Чебышёв) (1821-1894) was a prominent Russian mathematician, professor of algebra, number theory, and […]
Updated: November 30, 2022 by Rebecca Bales | Leave a Comment
Arthur Burkhardt In 1876 Curt Dietzschold (1852-1922), a German mechanical engineer from Dresden was invited to come in Glashütte (a small […]
Updated: July 27, 2023 by Rebecca Bales | Leave a Comment
History of Computers and Computing, Mechanical calculators, 19th century, Otto Büttner Otto Büttner In 1883 Karl Otto Büttner, a mechanical engineer from […]
Updated: April 19, 2024 by Rebecca Bales | Leave a Comment
Michael Bouchet Michael Bouchet (1827-1903) from Louisville, Kentucky, USA, was a holder of two USA patents for single-column adding devices (known […]
Updated: July 26, 2023 by Rebecca Bales | Leave a Comment
Edmund Dana Barbour (Source: Harvard University Archives, HUGFP 125.32, Box 1, Folder Barbour) Edmund Barbour In 1872, a certain Edmund D. Barbour […]
Frank Baldwin The state of calculating machine design by 1870s can be seen in a note, appearing in a 1872 issue […]
While many of the greatest inventors of the 19th century are known only for what’s on their patent, the […]
León Bollée After the first two machines, representing the class of direct-multiplying machines of Barbour and Verea, which remained relatively unknown, […]
Updated: July 26, 2023 by Heather | Leave a Comment
: The arithmetic machine of Johann Reichold The article was written with the expert help ofMr. Stephan Weiss,www.mechrech.info Until now, the information […]
: The calculating machines of Charles Stanhope The British statesman and versatile scientist Charles Stanhope, Viscount Mahon (see biography of […]
: The calculating machine of Giovanni Poleni The professor of astronomy, meteorology and mathematics and Marquis of the Holy Roman […]
: Jacob-Rodrigues Pereire In the 1751 issue of the earliest scientific journal in Europe—the french Le Journal des Sçavans, was […]
Updated: July 26, 2023 by Abby | Leave a Comment
Up Next… The Calculating Machine of Jacob Leupold In 1727, after the death of the prominent german scientist, instrument maker, physicist and […]
: The Machine Arithmetique of de Lépine In 1735, a six volume set of books was published by Jean Gaffin Gallon—Machines […]