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  2. Calculator spelling - Wikipedia

    en.wikipedia.org/wiki/Calculator_spelling

    Calculator spelling is an unintended characteristic of the seven-segment display traditionally used by calculators, in which, when read upside-down, the digits resemble letters of the Latin alphabet. Each digit may be mapped to one or more letters, creating a limited but functional subset of the alphabet, sometimes referred to as beghilos (or ...

  3. Category:Calculators - Wikipedia

    en.wikipedia.org/wiki/Category:Calculators

    Afrikaans; العربية; Asturianu; Azərbaycanca; تۆرکجه; বাংলা; Беларуская; Беларуская (тарашкевіца) Català

  4. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable calculator. It could add ...

  5. Scientific calculator - Wikipedia

    en.wikipedia.org/wiki/Scientific_calculator

    Casio fx-77, a solar-powered digital calculator from the 1980s using a single-line LCD. A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic (addition, subtraction, multiplication, division) and advanced (trigonometric, hyperbolic, etc.) mathematical operations and functions.

  6. Mathematical joke - Wikipedia

    en.wikipedia.org/wiki/Mathematical_joke

    Calculator spelling is the formation of words and phrases by displaying a number and turning the calculator upside down. [33] The jest may be formulated as a mathematical problem where the result, when read upside down, appears to be an identifiable phrase like " ShELL OIL " or " Esso " using seven-segment display character representations ...

  7. Calculator (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Calculator_(disambiguation)

    A calculator (in contemporary usage) is an electronic hand-held device that performs mathematical computations. Calculator may also refer to: Calculator (software) , a computer program that performs mathematical computations

  8. Desmos - Wikipedia

    en.wikipedia.org/wiki/Desmos

    Some 50 employees joined Amplify. Desmos Studio was spun off as a separate public benefit corporation focused on building calculator products and other math tools. [7] In May 2023, Desmos released a beta for a remade Geometry Tool. In it, geometrical shapes can be made, as well as expressions from the normal graphing calculator, with extra ...

  9. Talk:Calculator spelling - Wikipedia

    en.wikipedia.org/wiki/Talk:Calculator_spelling

    "The most common application of beghilos calculator spelling is done by students, often when bored during a mathematics lesson. The 'original' attributed example of calculator spelling, is 5318008, which when turned over spells "BOOBIES"." I personally find the whole sentence as an uncited excuse for including a spicy example.