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Johann Helfrich Von Müller
Johann Helfrich von Müller (January 16, 1746 in Kleve – 1830) was an engineer in the Hessian army who conceived the difference engine in 1786 (first written reference to the basic principles of a difference machine is dated to 1784), an idea that later evolved into modern computers. In 1784, he was responsible for an improved adding machine based on principles of Leibniz Gottfried Wilhelm (von) Leibniz . ( – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat. He is one of the most prominent figures in both the history of philosophy and the history of mathema ...'s stepped reckoner. Müller was demonstrably the first who came up with the idea of calculating mathematical tables automatically by a machine. To achieve this, he planned building a printing differential engine. However, this plan was not realized. ReferencesBiography of Johann Helfrich Müller with information on his calculating machines *d'Ocagne, Maurice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Von Müller
Johannes von Müller (3 January 1752 – 29 May 1809) was a Swiss historian. Biography He was born at Schaffhausen, where his father was a clergyman and rector of the gymnasium. In his youth, his maternal grandfather, Johannes Schoop (1696–1757), roused in him an interest in the history of his country. At the age of eight he is said to have written a history of Schaffhausen, and at eleven he knew the names and dates of all the kings of the four great monarchies. His ardour for historical studies was further stimulated by Schlözer, when Müller went (1769–1771) to the University of Göttingen, nominally to study theology. In July 1771 he undertook a sketch of Swiss history for a publisher of Halle, but his theological studies and the preparation of a Latin dissertation on the ''Bellum cimbricum'' (publ. in 1772) prevented much progress. In April 1772 he passed his theological examination, and soon after became professor of Greek at the Collegium Humanitatis in Schaffhause ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calculator By Johann Helfrich Von Müller, View 1, 1784, Wood, Brass, Steel, Leather - Hessisches Landesmuseum Darmstadt - Darmstadt, Germany - DSC00575
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics. The first solid-state electronic calculator was created in the early 1960s. Pocket-sized devices became available in the 1970s, especially after the Intel 4004, the first microprocessor, was developed by Intel for the Japanese calculator company Busicom. Modern electronic calculators vary from cheap, give-away, credit-card-sized models to sturdy desktop models with built-in printers. They became popular in the mid-1970s as the incorporation of integrated circuits reduced their size and cost. By the end of that decade, prices had dropped to the point where a basic calculator was affordable to most and they became common in schools. Computer operating systems as far back as early Unix have included interactive calculator programs such as dc and hoc, and interactive BASIC could be used to do calculations on most 1970s and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kleve
Kleve (; traditional en, Cleves ; nl, Kleef; french: Clèves; es, Cléveris; la, Clivia; Low Rhenish: ''Kleff'') is a town in the Lower Rhine region of northwestern Germany near the Dutch border and the River Rhine. From the 11th century onwards, Cleves was capital of a county and later a duchy. Today, Cleves is the capital of the district of Cleves in the German state of North Rhine-Westphalia. The city is home to one of the campuses of the Rhine-Waal University of Applied Sciences. Territory of the municipality In addition to the inner city, the territory of Kleve comprises fourteen villages and populated places: Bimmen, Brienen, Donsbrüggen, Düffelward, Griethausen, Keeken, Kellen, Materborn, Reichswalde, Rindern, Salmorth, Schenkenschanz, Warbeyen and Wardhausen. History The name ''Kleff'' probably derives from Middle Dutch ''clef'', ''clif'' 'cliff, bluff', referring to the promontory on which the Schwanenburg castle was constructed. Since the city's coat of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hessian (soldier)
Hessians ( or ) were German soldiers who served as auxiliaries to the British Army during the American Revolutionary War. The term is an American synecdoche for all Germans who fought on the British side, since 65% came from the German states of Hesse-Kassel and Hesse-Hanau. Known for their discipline and martial prowess, around 30,000 Germans fought for the British during the war, comprising a quarter of British land forces. While regarded, both contemporaneously and historiographically, as mercenaries, Hessians were legally distinguished as auxiliaries: whereas mercenaries served a foreign government of their own accord, auxiliaries were soldiers hired out to a foreign party by their own government, to which they remained in service. Auxiliaries were a major source of income for many small and relatively poor German states, typically serving in wars in which their governments were neutral. Like most auxiliaries of this period, Hessians served with foreign armies as entire uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Difference Engine
A difference engine is an automatic mechanical calculator designed to tabulate polynomial, polynomial functions. It was designed in the 1820s, and was first created by Charles Babbage. The name, the difference engine, is derived from the method of divided differences, a way to interpolate or tabulate functions by using a small set of polynomial co-efficients. Some of the most common mathematical functions used in engineering, science and navigation, were, and still are computable with the use of the difference engine's capability of computing logarithmic and trigonometric functions, which can be Taylor series, approximated by polynomials, so a difference engine can compute many useful mathematical table, tables of numbers. History The notion of a mechanical calculator for mathematical functions can be traced back to the Antikythera mechanism of the 2nd century BC, while early modern examples are attributed to Blaise Pascal, Pascal and Gottfried Leibniz, Leibniz in the 17th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adding Machine
An adding machine is a class of mechanical calculator, usually specialized for bookkeeping calculations. In the United States, the earliest adding machines were usually built to read in dollars and cents. Adding machines were ubiquitous office equipment until they were phased out in favor of calculators in the 1970s and by personal computers beginning in about 1985. The older adding machines were rarely seen in American office settings by the year 2000. Blaise Pascal and Wilhelm Schickard were the two original inventors of the mechanical calculator in 1642. For Pascal, this was an adding machine that could perform additions and subtractions directly and multiplication and divisions by repetitions, while Schickard's machine, invented several decades earlier, was less functionally efficient but was supported by a mechanised form of multiplication tables. These two were followed by a series of inventors and inventions leading to those of Thomas de Colmar, who launched the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gottfried Wilhelm Leibniz
Gottfried Wilhelm (von) Leibniz . ( – 14 November 1716) was a German polymath active as a mathematician, philosopher, scientist and diplomat. He is one of the most prominent figures in both the history of philosophy and the history of mathematics. He wrote works on philosophy, theology, ethics, politics, law, history and philology. Leibniz also made major contributions to physics and technology, and anticipated notions that surfaced much later in probability theory, biology, medicine, geology, psychology, linguistics and computer science. In addition, he contributed to the field of library science: while serving as overseer of the Wolfenbüttel library in Germany, he devised a cataloging system that would have served as a guide for many of Europe's largest libraries. Leibniz's contributions to this vast array of subjects were scattered in various learned journals, in tens of thousands of letters and in unpublished manuscripts. He wrote in several languages, primarily in Latin, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Engineers From Hesse
Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. "Science is knowledge based on our observed facts and tested truths arranged in an orderly system that can be validated and communicated to other people. Engineering is the creative application of scientific principles used to plan, build, direct, guide, manage, or work on systems to maintain and improve our daily lives." The word ''engineer'' (Latin ) is derived from the Latin words ("to contrive, devise") and ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1746 Births
Events January–March * January 8 – The Young Pretender Charles Edward Stuart occupies Stirling, Scotland. * January 17 – Battle of Falkirk Muir: British Government forces are defeated by Jacobite forces. * February 1 – Jagat Singh II, the ruler of the Mewar Kingdom, inaugurates his Lake Palace on the island of Jag Niwas in Lake Pichola, in what is now the state of Rajasthan in northwest India. * February 19 – Brussels, at the time part of the Austrian Netherlands, surrenders to France's Marshal Maurice de Saxe. * February 19 – Prince William, Duke of Cumberland, issues a proclamation offering an amnesty to participants in the Jacobite rebellion, directing them that they can avoid punishment if they turn their weapons in to their local Presbyterian church. * March 10 – Zakariya Khan Bahadur, the Mughal Empire's viceroy administering Lahore (in what is now Pakistan), orders the massacre of the city's Sikh people. April& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1830 Deaths
Year 183 ( CLXXXIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Victorinus (or, less frequently, year 936 ''Ab urbe condita''). The denomination 183 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * An assassination attempt on Emperor Commodus by members of the Senate fails. Births * January 26 – Lady Zhen, wife of the Cao Wei state Emperor Cao Pi (d. 221) * Hu Zong, Chinese general, official and poet of the Eastern Wu state (d. 242) * Liu Zan (Zhengming), Chinese general of the Eastern Wu state (d. 255) * Lu Xun Zhou Shuren (25 September 1881 – 19 October 1936), better known by his pen name Lu Xun (or Lu Sun; ; Wade–Giles: Lu Hsün), was a Chinese writer, essayist, poet, and literary critic. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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