who made the calculator?
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i guess you mean hand-held electronic calculator which uses chip.\n\nTexas, a company, made the first electronic calculator. Jack Kilby, who invented chip (Robert Noyce too is credited to be the inventor of chip), worked in the team which made the first calculator.\n\nThe first calculator did not have the screen but it printed the result on a thermal paper using printer attached to the calculator itself. Don't get the idea of the printer being very large. The first calculator was small enough to be used conveniently.
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Charles Babbage (December 26 1791 – October 18 1871) was an English mathematician, analytical philosopher and (proto-) computer scientist who originated the idea of a programmable computer. Parts of his uncompleted mechanisms are on display in the London Science Museum. In 1991, working from Babbage's original plans, a Difference Engine was completed, and functioned perfectly. It was built to tolerances achievable in the 19th century, indicating that Babbage's machine would have worked. \n\n\nLife\n\n\nCharles was born in London on December 26, 1791, probably at 44 Crosby Row, Walworth Road, London. Charles' father, Benjamin Babbage was a banking partner of the Praeds who owned the Bitton Estate in Teignmouth. His mother was Betsy Plumleigh Babbage. In 1808 the Babbage family moved into the old Rowdens house in East Teignmouth, and Charles' father became a warden of the nearby St. Michael?s Church. \n\n\nEducation\n\n\nHis father's money allowed Charles to receive instruction from several schools and tutors during the course of his elementary education. Around age eight he was sent to a country school to recover from a life-threatening fever. His parents ordered that his "brain was not to be taxed too much" and Babbage felt that "this great idleness may have led to some of my childish reasonings." He was sent to King Edward VI Grammar School in Totnes, South Devon, a thriving comprehensive school still extant today, but his health forced him back to private tutors for a time. He then joined a 30-student academy under Reverend Stephen Freeman. The academy had a well-stocked library that prompted Charles' love of mathematics. He studied with two more private tutors after leaving the academy. Of the first, a clergyman near Cambridge, Charles said, "I fear I did not derive from it all the advantages that I might have done." The second was an Oxford tutor from whom Charles learned enough of the Classics to be accepted to Cambridge. \n\nCharles arrived at Trinity College, Cambridge in October 1810. He had read extensively in Leibniz, Lagrange, Simpson, and Lacroix and was seriously disappointed in the mathematical instruction available at Cambridge. In response, he, John Herschel, George Peacock, and several other friends formed the Analytical Society. \n\nIn 1812 Charles transferred to Peterhouse, Cambridge. He was the top mathematician at Peterhouse, but failed to graduate with honors. He instead received an honorary degree without examination in 1814. \n\n\nMarriage\n\n\nOn July 25, 1814, he married Georgiana Whitmore at St. Michael's Church in Teignmouth, Devon. Charles' father did not approve of the marriage. The couple lived happily at 5 Devonshire Street, Portland Place, London. They had eight children, but only three lived to adulthood. Charles' father, his wife Georgiana Babbage, and one son died in 1827. \n\n\nChildren\n\n\n\n\n\n\nBenjamin Herschel Babbage (born 6 August 1815)\nCharles Whitmore Babbage (born 22 January 1817)\nGeogiana Whitmore Babbage (born 17 July 1818)\nEdward Stewart Babbage (born 15 December 1819)\nFrancis Moore Babbage (born 1 June 1821)\nDugald Bromheald Babbage (born 13 March 1823)\nHenry Prevost Babbage (born 16 September 1824)\nAlexander Forbes Babbage (born 1827)\n\n\n\nDesign of computers\n\n\nIn recognition of the high error rate in the calculation of mathematical tables, Babbage sought to find a method by which they could be calculated mechanically, removing human sources of error. This idea may have come to him as early as 1812. Three different factors seem to have influenced him: a dislike of untidiness; his experience working on logarithmic tables; and existing work on calculating machines carried out by Wilhelm Schickard, Blaise Pascal and Gottfried Leibniz. He first discussed the principles of a calculating engine in a letter to Sir Humphrey Davy in 1822. \n\nPart of Babbage's Difference engine, assembled after his d
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At age eighteen Pascal constructed a mechanical calculator, called Pascal's calculator or the Pascaline, capable of addition and subtraction, to help his father with this work. The Zwinger museum, in Dresden, Germany, exhibits one of his original mechanical calculators. Though these machines stand near the head of the development of computer engineering, the calculator failed to be a great commercial success. Pascal continued to make improvements to his design through the next decade and built a total of fifty machines.\n\nSorry, it's quite long.  Hopefully I was able to cover most of the inventions, if not all by these great mathematicians.  \nIn addition to the childhood marvels recorded above, Pascal continued to influence mathematics throughout his life. In 1653 Pascal wrote his Traité du triangle arithmétique in which he described a convenient tabular presentation for binomial coefficients, the "arithmetical triangle", now called Pascal's triangle. (It should be noted, however, that Yang Hui, a Chinese mathematician of the Qin dynasty, had independently worked out a concept similar to Pascal's triangle four centuries earlier.)\n\nIn 1654, prompted by a friend interested in gambling problems, he corresponded with Fermat on the subject, and from that collaboration was born the mathematical theory of probabilities. The friend was the Chevalier de Méré, and the specific problem was that of two players who want to finish a game early and, given the current circumstances of the game, want to divide the stakes fairly, based on the chance each has of winning the game from that point. (This was the introduction of the notion of expected value.) Pascal later (in the Pensées) used a probabilistic argument, Pascal's Wager, to justify belief in God and a virtuous life. The work done by Fermat and Pascal into the calculus of probabilities laid important groundwork for Leibniz's formulation of the infinitesimal calculus. [1]\n\nAfter a religious experience in 1654, Pascal mostly gave up work in mathematics. However, after a sleepless night in 1658 he offered, anonymously, a prize for the quadrature of a cycloid. Solutions were offered by Wallis, Huygens, Wren, and others; then Pascal, under a pseudonym, published his own solution. A controversy followed in which the competitors, including Pascal, behaved less than philosophically.\nLobachevsky's main achievement is the development (independently from János Bolyai) of non-Euclidean geometry. Before him, mathematicians were trying to deduce Euclid's fifth postulate from other axioms. Lobachevsky would instead develop a geometry in which the fifth postulate was not true. This idea was first reported on February 23 (Feb. 11, O.S.), 1826 to the session of the department of physics and mathematics, and this research was printed in the UMA (Вестник Казанского университета) in 1829–1830. The recognition of his ideas by the mathematical community was quite slow. They were fully accepted only several decades after Lobachevsky's death.\n\nAnother of Lobachevsky's achievements was developing a method for the of letters approximation of the roots of algebraic equations. This method is now known as Dandelin-Gräffe method, named after two other mathematicians who discovered it independently. In Russia, it is called the Lobachevsky method. Lobachevsky gave the definition of a function as a correspondence between two sets of real numbers (Dirichlet gave the same definition independently soon after Lobachevsky).\n\nSir Horace Lamb FRS (November 29, 1849 - December 4, 1934) was a British applied mathematician and author of several influential texts on classical physics, among them Hydrodynamics (1879) and Dynamical Theory of Sound (1910). Both of these books are still in print.
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he invented the telephone
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this is actually very complicated and I had never thought about it before. everyone always just uses their calculator. see this website for several methods of doing it manually.
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He invented the sandwich...\n:)
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Use the calculator on your computer...
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How will you know if I use a calculator?
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didn't you here that there is a new invention called a calculator.
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Make a program on your calculator.\nView the snippet in the link for code.
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Isaac Newton.  Born the same day Galileo died. (Possible argument for re-incarnation?) Isaac Newton invented the calculus which is the study of numbers in motion. He was also  President(?) of Oxford University in England.
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$1267.00 + Tax\n\nOn a serious note: Calculators can just do Arthematic Operations while a computer system can do both Arthematic Operations as well as Logical Operations (AND, OR, XOR, XNOR, NOT, Shift Left Shift Right etc...) and using these Logical Operations speed up the Arthematic Operations.
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The first actual calculating mechanism known to us is the abacus, which is thought to have been invented by the Babylonians sometime between 1,000 BC and 500 BC
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Still Bill Gates\nhttp://www.forbes.com/2004/02/25/bill04land.html\n\nAnd, no, he didn't invent the computer.
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http://www.calculator.com/
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Aryabhatta, the Indian mathematician who invented 0.
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Well, put it in a calculator. Heck, enter "34567890 multiplied by 9876543" into Google and it'll tell you.