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Updated: July 28, 2023 by Rebecca Bales | Leave a Comment
History of Computers and Computing, Mechanical calculators, 20th century, Gauss of Christel Hamann Gauss of Christel Hamann The German engineer Christel Hamann […]
Mathias Bäuerle elder (1838-1916) and his son Tobias Bäuerle (1863-1933) Mathias Bäuerle In 1903, the German clock manufacturer from Schwarzwäld—Bäuerle Uhrenfabrik (Clock […]
James White Many thanks to Mr. Denis Roegel, Professor at Loria, France, for his seminal work on White’s adding machine In 1822, […]
Ramón Verea In 1878 Ramón Silvestre Verea García (1833-1899), a Spaniard, newspaper publisher in New York, patented a direct-multiplying machine, which […]
Portrait of Abraham Stern (with one of his calculating machines) from 1823, artist Jan Antoni Blank The problem with the world […]
Izrael Abraham Staffel The Polish Jew Izrael Abraham Staffel was born in 1814 to an impoverished family in Warsaw, Poland, then […]
History of Computers and Computing, Mechanical calculators, 19th century, Joseph Abraham Valentine Turck Joseph Turck Joseph Abraham Valentine Turck (1870-1956) was a […]
Updated: July 28, 2023 by Heather | Leave a Comment
: Luigi Torchi was a carpenter and inventor who was credited for inventing the first direct multiplication machine. This […]
Updated: July 27, 2023 by Heather | Leave a Comment
: Chaim Zelig Slonimski The Polish/Russian Jew Chaim Zelig Slonimski (see biography of Chaim Zelig Slonimski) was a Hebrew publisher, […]
: Jean-Baptiste Schwilgué In 1844 the French Jean-Baptiste Schwilgué from Strasbourg (see biography of Jean-Baptiste Schwilgué), together with his son […]
History of Computers and Computing, Mechanical calculators, 19th century, Eduard Selling : Eduard Selling In 1886 the professor of mathematics at […]
: The Machines of David Roth The pin-wheel mechanism, known from the sketch of Leibniz and machines of Poleni (1709) […]
Updated: April 16, 2024 by History Computer Staff | Leave a Comment
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 […]
Who Was Willgodt Odhner? Willgodt Odhner was a Swedish inventor and engineer. He invented a mechanical calculator and founded a […]
History of Computers and Computing, Mechanical calculators, 19th century, Maurel and Jayet The arithmaurel of Maurel and Jayet In 1841 in […]
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
: The Adding Device of Kummer Several people experimented with versions of simple mechanical calculators that involved strips of metal with […]
: Manipolatore Aritmetico of Niccola Guinigi (Created with the expert advice of Mr. Silvio Hénin, Milan, Italy) In the 1850s (or even […]
: 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 […]
