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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. Isopsephy - Wikipedia

    en.wikipedia.org/wiki/Isopsephy

    In numerology, isopsephy (/ ˈ aɪ s ə p ˌ s ɛ f i /; from Greek ἴσος (ísos) 'equal' and ψῆφος (psêphos) 'count', lit. ' pebble ') or isopsephism is the practice of adding up the number values of the letters in a word to form a single number. [1]

  4. 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 ...

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  6. Numero sign - Wikipedia

    en.wikipedia.org/wiki/Numero_sign

    The Oxford English Dictionary derives the numero sign from Latin numero, the ablative form of numerus ("number", with the ablative denotations of "by the number, with the number"). In Romance languages, the numero sign is understood as an abbreviation of the word for "number", e.g. Italian numero, French numéro, and Portuguese and Spanish ...

  7. Scientific notation - Wikipedia

    en.wikipedia.org/wiki/Scientific_notation

    Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, since to do so would require writing out an inconveniently long string of digits. It may be referred to as scientific form or standard index form, or standard form in the United Kingdom.

  8. Non-numerical words for quantities - Wikipedia

    en.wikipedia.org/wiki/Non-numerical_words_for...

    The English language has a number of words that denote specific or approximate quantities that are themselves not numbers. [1] Along with numerals, and special-purpose words like some, any, much, more, every, and all, they are quantifiers. Quantifiers are a kind of determiner and occur in many constructions with other determiners, like articles ...

  9. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    Calculators also have the ability to save numbers into computer memory. Basic calculators usually store only one number at a time; more specific types are able to store many numbers represented in variables. Usually these variables are named ans or ans(0). [3] The variables can also be used for constructing formulas.