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In about 1970 HP co-founder Bill Hewlett challenged France Rode to create a "shirt-pocket sized HP-9100".At the time, slide rules were the only practical portable devices for performing trigonometric and exponential functions, as existing pocket calculators could only perform addition, subtraction, multiplication, and division.
A Pascaline signed by Pascal in 1652 Top view and overview of the entire mechanism. This version of Pascaline was for accounting. [1]The pascaline (also known as the arithmetic machine or Pascal's calculator) is a mechanical calculator invented by Blaise Pascal in 1642.
In algebra, the partial fraction decomposition or partial fraction expansion of a rational fraction (that is, a fraction such that the numerator and the denominator are both polynomials) is an operation that consists of expressing the fraction as a sum of a polynomial (possibly zero) and one or several fractions with a simpler denominator.
Calculator first appeared in Detective Comics #463 (September 1976), and he was created by Bob Rozakis and Mike Grell. [1]As is commonplace in comics, the character was based on a topical event or trend; in this case, Noah Kuttler took his powers and costume design from the recently popular pocket calculator.
Persen is a surname and may refer to: John Persen (1941–2014), Norwegian composer; Mari Boine Persen (born) 1956), Norwegian Sami musician; Synnøve Persen (born ...
John Andreas Persen (9 November 1941 – 12 December 2014) was a Norwegian composer. John Persen grew up in a laestadian, Sami family in Ráigeadja in Porsanger Municipality and was a son-in-law of Finn Strømsted. [1] In 1968, John Persen moved to Oslo to study music and initiated the establishment of the Norwegian Academy of Music at the same ...