In this letter to Charles Babbage, Ada Lovelace proposes a calculation that may be worked out by an engine rather than a human – it’s the first time the idea of a computer programme had been set out in writing. See it in #BLTreasures https://t.co/cE6Rqpw22O #AdaLovelaceDay pic.twitter.com/JVJEYnpgZE

— British Library (@britishlibrary) October 9, 2018