The first computer programmer in history was a woman from the nineteenth century.
Why it is true
Ada Lovelace wrote the first algorithm intended to be processed by a machine, Charles Babbage s Analytical Engine, in the eighteen forties. Her visionary work anticipated modern computing by more than a century.
Source: Computer History Museum
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This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.