Результаты (
английский) 1:
[копия]Скопировано!
2. Charles Babbage − prominent pioneer in computer scienceCharles Babbage (1791-1871) was an English mathematician and (proto-)computer scientist who was the first person to come up with the idea of a computer. In1991, working from original plans, Babbage's a Difference Engine was completed, andfunctioned perfectly. Born in Teignmouth, Devonshire, he was an alumnus of TrinityCollege, Cambridge and of Peterhouse, Cambridge. He graduated from Cambridge in1814. In that same year, he married Georgiana Whitmore. They had eight children, butonly three lived to adulthood. Mrs Babbage died in 1827.In recognition of the high error rate in the calculation of mathematical tables,Babbage sought to find a method by which they could be calculated by machine, whichwould not suffer the errors, fatigue and boredom of human calculators. This idea hadcome to him as early as 1812. Three different factors seem to have influenced him: adislike of untidiness, his awareness of logarithmic tables, and work on calculatingmachines carried out by Blaise Pascal, and Gottfried Leibniz.He presented a model of what he called a Difference Engine to the RoyalAstronomical Society in 1821. Its purpose was to tabulate polynomials using anumerical method of the so-called the differences method. The Society approved the idea, and thisin turn enabled him to get a grant of £ 1500 by the British Government in 1823.Construction started on this machine, but it was not completed. Two things went wrong.One was that the internal friction and gearing available at the time were not goodenough for the models to be completed-vibrations were a constant problem. The otherwas that he kept changing his mind about the design of the machine. By 1833, £ 17000had been spent with no satisfactory result. Between 1833 and 1842, Babbage triedagain; This time, he tried to build a machine that would be programmable to do any kindof calculation, not just ones relating to polynomial equations. This was the AnalyticalEngine. The design was based on Joseph Marie Jacquard's sewing loom, which used 44punched cards to determine how a sewing design would be carried out. Babbage adaptedThis design so that it would create mathematical actions instead.The Analytical Engine had input devices based on punched cards, as perJacquard's design, an arithmetic processor that calculated numbers, a control unit thatdetermined that the correct task was carried out, an output mechanism and a memorywhere numbers could be stored whilst waiting their turn to be processed. It was thisdevice that was the world's first computer. A concrete design for this emerged by 1835;However, because of his failures involving the Difference Engine, the engine was neverbuilt-in.
переводится, пожалуйста, подождите..