The daughter of British poet Lord Byron, Ada Lovelace was a Victorian mathematician. She worked with Charles Babbage on his calculating machines – he called her the “enchantress of numbers”.
Joan Clarke worked alongside Alan Turing at Bletchley Park – the British codebreaking centre during World War Two.
Margaret Hamilton was director of software engineering for the project that wrote the code for the Apollo Guide Computer (AGC).
Rear Admiral Dr Grace Murray Hopper pioneered the development of accessible computer programming languages written in English.
A group of six young women (Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Wescoff, Fran Bilas and Ruth Lichterman) who developed the first all-electronic, programmable computer as part of the US Army’s World War Two effort. When the ENIAC was first unveiled, the women received no recognition.
Photo by Benjamin Child