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21 fixed-point notation
1. представление с фиксированной запятойnumber notation — система счисления; численное представление
2. представление с фиксированной точкой -
22 floating-point notation
1. представление с плавающей запятой2. представление с плавающей точкойnumber notation — система счисления; численное представление
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23 coded-decimal notation
кодированная десятичная система счисления; кодированное десятичное представление; представление в кодированной десятичной системе счисления -
24 logarithmic notation
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25 positional notation
позиционная система счисления; позиционное представление -
26 quaternary notation
четверичная система счисления; четверичное представление; представление в четверичной системе счисления -
27 scientific notation
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28 ternary notation
троичная система счисления; троичное представление; представление в троичной системе счисления -
29 signal notation
English-Russian big polytechnic dictionary > signal notation
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30 bidecimal notation
English-Russian dictionary of Information technology > bidecimal notation
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31 binary-coded decimal notation
English-Russian dictionary of Information technology > binary-coded decimal notation
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32 decimal notation
English-Russian dictionary of Information technology > decimal notation
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33 scientific notation
English-Russian dictionary of Information technology > scientific notation
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34 scientific notation
1) Общая лексика: научная запись, научная нотация3) Вычислительная техника: научное представление, представление с мантиссой и порядком, экспоненциальное представление чисел (в виде мантиссы и порядка)4) Нефть: экспоненциальный формат5) Программирование: экспоненциальная запись (представление действительных чисел в виде мантиссы и порядка. Если число отрицательное, то знак минус предшествует мантиссе, например -0.0124E-02. Syn: exponential notation), экспоненциальное представление (чисел)6) Макаров: экспоненциальное представление числа -
35 scientific notation
экспоненциальная запись, экспоненциальное представление [чисел]представление действительных чисел в виде мантиссы и порядка. Если число отрицательное, то знак минус предшествует мантиссе, например -0.0124E-02.Syn:Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. > scientific notation
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36 экспоненциальное представление
Большой англо-русский и русско-английский словарь > экспоненциальное представление
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37 Burgi, Jost
SUBJECT AREA: Horology[br]b. 28 February 1552 Lichtensteig, Switzerlandd. 31 January 1632 Kassel, Germany[br]Swiss clockmaker and mathematician who invented the remontoire and the cross-beat escapement, also responsible for the use of exponential notation and the calculation of tables of anti-logarithms.[br]Burgi entered the service of Duke William IV of Hesse in 1579 as Court Clockmaker, although he also assisted William with his astronomical observations. In 1584 he invented the cross-beat escapement which increased the accuracy of spring-driven clocks by two orders of magnitude. During the last years of the century he also worked on the development of geometrical and astronomical instruments for the Royal Observatory at Kassel.On the death of Duke Wilhelm in 1603, and with news of his skills having reached the Holy Roman Emperor Rudolph II, in 1604 he went to Prague to become Imperial Watchmaker and to assist in the creation of a centre of scientific activity, subsequently becoming Assistant to the German astronomer, Johannes Kepler. No doubt this association led to an interest in mathematics and he made significant contributions to the concept of decimal fractions and the use of exponential notation, i.e. the use of a raised number to indicate powers of another number. It is likely that he was developing the idea of logarithms at the same time (or possibly even before) Napier, for in 1620 he made his greatest contribution to mathematics, science and, eventually, engineering, namely the publication of tables of anti-logarithms.At Prague he continued the series of accurate clocks and instruments for astronomical measurements that he had begun to produce at Kassel. At that period clocks were very poor timekeepers since the controller, the foliot or balance, had no natural period of oscillation and was consequently dependent on the driving force. Although the force of the driving weight was constant, irregularities occurred during the transmission of the power through the train as a result of the poor shape and quality of the gearing. Burgi attempted to overcome this directly by superb craftsmanship and indirectly by using a remontoire. This device was wound at regular intervals by the main driving force and fed the power directly to the escape wheel, which impulsed the foliot. He also introduced the crossbeat escapement (a variation on the verge), which consisted of two coupled foliots that swung in opposition to each other. According to contemporary evidence his clocks produced a remarkable improvement in timekeeping, being accurate to within a minute a day. This improvement was probably a result of the use of a remontoire and the high quality of the workmanship rather than a result of the cross-beat escapement, which did not have a natural period of oscillation.Burgi or Prague clocks, as they were known, were produced by very few other makers and were supplanted shortly afterwards by the intro-duction of the pendulum clock. Burgi also produced superb clockwork-driven celestial globes.[br]Principal Honours and DistinctionsEnnobled 1611.BibliographyBurgi only published one book, and that was concerned with mathematics.Further ReadingL.von Mackensen, 1979, Die erste Sternwarte Europas mit ihren Instrumenten and Uhren—400 Jahre Jost Burgi in Kassel, Munich.K.Maurice and O.Mayr (eds), 1980, The Clockwork Universe, Washington, DC, pp. 87– 102.H.A.Lloyd, 1958, Some Outstanding Clocks Over 700 Years, 1250–1950, London. E.T.Bell, 1937, Men of Mathematics, London: Victor Gollancz.See also: Briggs, HenryKF / DV -
38 exponent form
экспоненциальная форма [записи числа с плавающей запятой]Syn:Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. > exponent form
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См. также в других словарях:
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