The Analytical Engine was a design by Babbage, Charles in the 1830s following his Difference Engine, inspired by the punch-card-based Jacquard Looms It was never completed, but in concept is seen as the first programable computer. Lovelace, Ada, long term collaborator with Babbage idetified the special qualities of the ``{\em The Difference Engine can merely tabulate, and is incapable of developing, the Analytical Engine can either tabulate or develope.}''
Used on pages 6, 221
Links:
blogs.bodleian.ox.ac.uk: Ada Lovelace and the Analytical Engine- collection.sciencemuseumgroup.org.uk: Babbage's Analytical Engine, 1834-1871. (Trial model)
- fourmilab.ch: Ada Lovelace – Notes upon the Memoir by the Translator: Sketch of The Analytical Engine Invented by Charles Babbage, By L. F. Menabrea, Biblioth\`eque Universelle de Gen\`eve, October, 1842, No. 82