Ada King Countess of Lovelace by Alfred Chalon Classic Round Sticker

Augusta Ada King, Countess of Lovelace (10 December 1815 – 27 November 1852), born Augusta Ada Byron and now commonly known as Ada Lovelace, was an English mathematician and writer chiefly known for her work on Charles Babbage's early mechanical general-purpose computer, the Analytical Engine. Her notes on the engine include what is recognised as the first algorithm intended to be processed by a machine. Because of this, she is often described as the world's first computer programmer. This work is in the public domain in the United States, and those countries with a copyright term of life of the author plus 100 years or less. Author Alfred Edward Chalon (1780–1860)