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Updated: July 21, 2023 by Heather | Leave a Comment
Pascaline Calculator History Blaise Pascal invented the Pascaline Calculator. Pascal was considered a child prodigy and was gifted in a variety […]
Updated: July 28, 2023 by Lisha Pace | Leave a Comment
René Grillet de Roven In 1673 the Parisian mechanician and watchmaker of His Royal Highness King Louis XIV—René Grillet de Roven […]
The Calculating Machines of Sir Samuel Morland The polymath Samuel Morland (see biography of Samuel Morland), was a notable English academic, […]
Who was Ryoichi Yazu? Ryoichi Yazu Ryoichi Yazu was a Japanese inventor. He is well known for his invention of Japan’s first […]
Oliver David Johantgen (8 July 1875, Charleston, Indiana – 11 April 1932 in Evanston, Cook, Illinois) Victor Adding Machine Victor Adding Machine […]
Updated: July 28, 2023 by Rebecca Bales | Leave a Comment
History of Computers and Computing, Mechanical calculators, 20th century, Wales Charles Wales Charles Wales, a genius of mechanical motion and a native […]
Updated: December 6, 2022 by Lisha Pace | Leave a Comment
Alexander Rechnitzer, inventor of the Autorit Who is Alexander Rechnitzer? Alexander Rechnitzer was an exceptionally gifted mechanic and inventor who laid the […]
History of Computers and Computing, Mechanical calculators, 20th century, Hopkins William and Hubert Hopkins machines The Hopkins brothers, William and Hubert, from […]
Dalton Adding Machine James Lewis Dalton (1866-1926) (see biography of James Lewis Dalton) was a successful businessman and amateur mechanic from […]
Curta Type2 Mechanical Calculator 4 Facts About Curta Calculator Some major facts about the Curta calculator are as follows: Due to its design […]
History of Computers and Computing, Mechanical calculators, 20th century, Gauss of Christel Hamann Gauss of Christel Hamann The German engineer Christel Hamann […]
Ensign Electric Calculating Machine Ensign Electric Calculating Machine is a highly developed, electrically driven adding and subtracting machine, particularly suited for […]
Public domain, via Wikimedia Commons Ramón Verea In 1878 Ramón Silvestre Verea García (1833-1899), a Spaniard, newspaper publisher in New York, patented […]
James White Many thanks to Mr. Denis Roegel, Professor at Loria, France, for his seminal work on White’s adding machine In 1822, […]
Twilight of the gods – 20th century The 20th century is a time of ubiquity and decline of mechanical calculating machines. […]
Updated: July 21, 2023 by Rebecca Bales | Leave a Comment
3 Facts about Winter’s Keyboard Adder Winter’s Keyboard Adder is the first, and so far the only, mechanical calculator that was […]
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 […]
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 particular machine […]
Portrait of Abraham Stern (with one of his calculating machines) from 1823, artist Jan Antoni Blank The problem with the world […]
Long before the hand-held calculators, there was the millionaire calculator machine—a large, clunky, and expensive mechanical machine that performed direct […]
A Portrait of Jean-Baptiste Schwilgué. : Jean-Baptiste Schwilgué This inventor is best known for being the creator of the last astronomical […]
Updated: July 27, 2023 by Heather | Leave a Comment
A Portrait of Chaim Zelig Slonimski. Chaim Zelig Slonimski The Polish/Russian Jew Chaim Zelig Slonimski (see biography of Chaim Zelig Slonimski) […]
History of Computers and Computing, Mechanical calculators, 18th century, Victor Schilt’s keyboard adder Victor Schilt The calculating machine of the swiss clockmaker […]
History of Computers and Computing, Mechanical calculators, 19th century, Eduard Selling Eduard Selling In 1886 the professor of mathematics at the University […]
3 and Facts About the Saxonia Calculating Machine Over 12,000 Saxonia calculating machines were manufactured and sold from 1895 […]
The Machines of David Roth The pin-wheel mechanism, known from the sketch of Leibniz and machines of Poleni (1709) and Braun […]
Updated: July 21, 2023 by Abby | Leave a Comment
Four Facts About Tito Gonnella’s Adding Machines Black and white sketch of one of Tito Gonnella’s first adding machines. Tito Gonnella invented […]
Updated: July 27, 2023 by Abby | Leave a Comment
: Between 1872 and 1898, American George Barnard Grant patented and manufactured several models of calculating machines through his […]
: Count Niccola Guinigi-Magrini was an inventor from Lucca, Italy who designed and produced a dial adder called the Manipolatore […]
: In 1700-1800’s, multiple inventors experimented with building mechanical calculators that featured strips of metal with number markings mounted on […]
: Thomas Fowler is best known for creating a booklet titled Tables for Facilitating Arithmetical Calculations, which was his attempt […]
Comptometer Model A Four Facts About Comptometer The Comptometer is known to be the first key-driven adding and calculating machine. Comptometers were in […]
History of Computers and Computing, Mechanical calculators, 19th century, Joseph Edmondson : Joseph Edmondson was the inventor of a circular calculating […]
Charles-Xavier de Colmar in 1846 4 Facts about the Arithmometer of Thomas de Colmar Thomas de Colmar’s arithmometer was the first commercially […]
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 […]
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Arthur Burkhardt In 1876 Curt Dietzschold (1852-1922), a German mechanical engineer from Dresden was invited to come in Glashütte (a small […]
Updated: July 26, 2023 by Rebecca Bales | Leave a Comment
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 truth […]
Edmund Dana Barbour (Source: Harvard University Archives, HUGFP 125.32, Box 1, Folder Barbour) Edmund Barbour In 1872, a certain Edmund D. Barbour […]
Michael Bouchet Michael Bouchet (1827-1903) from Louisville, Kentucky, USA, was a holder of two USA patents for single-column adding devices (known […]
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
: Reichold was a expert at woodworking, and he carved and constructed wooden clocks and other things including an arithmetic […]
The Conquering of the World — 19th century More than two centuries elapsed between the introduction of the first mechanical calculator […]
A Portrait Drawing of Giovanni Poleni. The calculating machine of Giovanni Poleni The professor of astronomy, meteorology and mathematics and Marquis […]
A Portrait of Jacob-Rodrigues Pereire. Jacob-Rodrigues Pereire In the 1751 issue of the earliest scientific journal in Europe—the french Le Journal des […]
A Portrait of Charles Stanhope. The calculating machines of Charles Stanhope The British statesman and versatile scientist Charles Stanhope, Viscount Mahon (see […]
Updated: July 26, 2023 by Abby | Leave a Comment
Up Next… Jaco Leupold (1674–1727) was a German scientist, instrument maker, physicist and mathematician wrote Theatrum arithmetico-geometricum, the best illustrated work […]
: Jean Gaffin Gallon, an engineer, published a six book set in 1735 recording including descriptions and engravings of all […]