Original: Augusta Ada King , Countess of Lovelace ( 10 December 1815 -- 27 November 1852 ) , born Augusta Ada Byron , was an English writer chiefly known for her work on Charles Babbage 's early mechanical general-purpose computer , the analytical engine .
Simplified: Augusta Ada King , Countess of Lovelace ( 10 December 1815 -- 27 November 1852 ) , born Augusta Ada Byron , was an English writer who became the worlds first computer programmer .