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  2. HP-16C - Wikipedia

    en.wikipedia.org/wiki/HP-16C

    HP has never made another calculator specifically for programmers, [2] but has incorporated many of the HP-16C's functions in later scientific and graphing calculators, for example the HP-42S (1988) and its successors. Like many other vintage HP calculators, the HP-16C is now highly sought-after by collectors. [14]

  3. TI-59 / TI-58 - Wikipedia

    en.wikipedia.org/wiki/TI-59_/_TI-58

    The TI-59 is an early programmable calculator, that was manufactured by Texas Instruments from 1977. It is the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" (an insertable ROM chip, capable of holding 5000 program steps).

  4. G. H. Mumm - Wikipedia

    en.wikipedia.org/wiki/G._H._Mumm

    G.H. Mumm was the official sponsor of F1 racing from 2000 until 2015 and provided the champagne bottles for the podium celebrations after each race. Now, they are the official sponsor of Formula E. [1] G.H. Mumm Cordon Rouge is also the official champagne of the Kentucky Derby and Australia's Melbourne Cup, two major horse races. [3]

  5. Casio graphic calculators - Wikipedia

    en.wikipedia.org/wiki/Casio_graphic_calculators

    The calculator also adopts the same menu based layout as the Classwiz scientific calculators. [12] [13] In France, the Classwiz CG Series was introduced in March 2024 with reduced functionality and is known as the Graph Math +.

  6. Thomas Fuller (mental calculator) - Wikipedia

    en.wikipedia.org/wiki/Thomas_Fuller_(mental...

    One of the gentlemen, who employed himself with his pen in making these calculations, told him he was wrong, and that the sum was not so great as he had said-upon which the old man hastily replied, "top, massa, you forget de leap year." On adding the seconds of the leap years to the others, the amount of the whole in both their sums agreed exactly.

  7. Unit fraction - Wikipedia

    en.wikipedia.org/wiki/Unit_fraction

    A unit fraction is a positive fraction with one as its numerator, 1/ n. It is the multiplicative inverse (reciprocal) of the denominator of the fraction, ...

  8. Egyptian fraction - Wikipedia

    en.wikipedia.org/wiki/Egyptian_fraction

    The Rhind Mathematical Papyrus. An Egyptian fraction is a finite sum of distinct unit fractions, such as + +. That is, each fraction in the expression has a numerator equal to 1 and a denominator that is a positive integer, and all the denominators differ from each other.

  9. Greedy algorithm for Egyptian fractions - Wikipedia

    en.wikipedia.org/wiki/Greedy_algorithm_for...

    In mathematics, the greedy algorithm for Egyptian fractions is a greedy algorithm, first described by Fibonacci, for transforming rational numbers into Egyptian fractions. An Egyptian fraction is a representation of an irreducible fraction as a sum of distinct unit fractions , such as ⁠ 5 / 6 ⁠ = ⁠ 1 / 2 ⁠ + ⁠ 1 / 3 ⁠ .