1815 - Ada was born, the daughter of Annabella Milbanke and the famous poet Lord Byron. Ada had an unusual education for a woman at that time as her mother, who had mathematical training, insisted that Ada learn mathematics.

1833 - Ada met Charles Babbage, who is credited with inventing the first mechanical computer, at a party. When Babbage demonstrated the small working section of an engine to her, Ada was inspired.

1843 - Ada published a translation of a French article on the Analytical Engine which included extensive notes of her own. These notes included the following:
- A visionary insight into the potential of computers to act upon things other than numbers, such as composing elaborate pieces of music with huge complexity or analysing all subjects in the universe.
- A step-by-step sequence of operations for solving mathematical problems, the world’s first complete computer programme - marking the significant leap from calculation to computation.