Ada Lovelace (Augusta Ada King, Countess of Lovelace) was born this day in 1815.
The following quote is taken from Wikipedia’s entry for Ada Lovelace.
She is mainly known for having written a description of Charles Babbage‘s early mechanical general-purpose computer, the analytical engine. She is today appreciated as the “first programmer” since she was writing programs — that is, manipulating symbols according to rules—for a machine that Babbage had not yet built. She also foresaw the capability of computers to go beyond mere calculating or number-crunching while others, including Babbage himself, focused only on these capabilities.
Programming language Ada was named after her.