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Abu Ja'far Mohammed ibn Musa al-Khowarizmi

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Abu Ja'far Mohammed ibn Musa al-Khowarizmi

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The discovery of algorithms.

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The axiomatic method,  multiplication tables, tables of squares and roots, tables of cubes and cube roots, exponential tables to obtain compound interest, a formula to solve quadratic equations

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The decimal numbering,  symbol of "nothing", negative numbers

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The first to write about Arabic numerals in the West

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Demostrated that debts and similar phenomena could be treated with negative numbers

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Designed and built what is considered the first digital calculator

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The inventor of the calculator

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Leibniz wheel. This device could automatically perform additions, subtractions, multiplications and divisions

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"differential" machine

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"The Difference Machine" and "The Analytical Machine"

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He established for the process of reasoning a symbolic representation. To do this he used variables that could only adopt two values "1" (true) and "0" (false), discarding any value of "half truth"

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Assumed responsibility for the design of the logical structure of the EDVAC

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The first fully electronic digital computer

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The first was FORTRAN (FORmula TRANslator)

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An electromechanical machine named Mark 1 capable of multiplying two numbers in six seconds and dividing them by twelve

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Was the first director of ARPA. Wrote an essay on the concept of the Intergalactic Network