Augusta Ada King-Noel, Countess of Lovelace (10 December 1815 – 27 November 1852) was an English mathematician and writer, chiefly known for her work on Charles Babbage's proposed mechanical general-purpose computer, the Analytical Engine.
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Considered by some to be the "Mother of Computer Programming", Ada Lovelace was the first to recognize that the machine had applications beyond pure calculation, and published the first algorithm intended to be carried out by such a machine. As a result, she is sometimes regarded as the first to recognize the full potential of a "computing machine" and the first computer programmer.
Lovelace first met Charles Babbage in June 1833, through their mutual friend Mary Somerville. Later that month Babbage invited Lovelace to see the prototype for his Difference Engine. She became fascinated with the machine and used her relationship with Somerville to visit Babbage as often as she could. Babbage was impressed by Lovelace's intellect and analytic skills. He called her "The Enchantress of Number". In 1843 he wrote to her:
"Forget this world and all its troubles and if possible its multitudinous Charlatans—every thing in short but the Enchantress of Number."