Dame Stephanie Shirley might be the most successful tech entrepreneur you have never heard of. In the early 1960s, Shirley started a barrier-breaking, all-woman software company that would eventually be valued at $3 billion. From a rarely heard oral history at The British Library, Shirley takes us on the journey from fleeing Nazi Germany as a little girl to breaking through in the new world of computers despite not being taken seriously as a woman working from home.

Watch the animated version of this episode from our series with PBS Digital Studios: http://bit.ly/steve-shirley