Babbage was impressed with her intellect and analytical skills. He called her the "The Enchantress of Numbers". In 1840, Babbage gave a seminar at the University of Turin on his latest invention, the analog computing machine that served as a perpetual calendar. The seminar was attended by the Italian engineer Luigi Menabrea (later Prime Minister of Italy), who took notes of the lecture and later published them.
Ada Lovelace translated the article and added her own notes, three times as long as the article itself: The diagram attached to the article is considered the first computer program. She created an algorithm to compute Bernoulli numbers (sequence of rational numbers which occur frequently in analysis), but it was not tested because the machine was never built.
