On Ada Lovelace Day, we break down how diverse tech companies actually are

A woman helped create and program the world's first general purpose computer. How much progress has there been since Ada Lovelace Day began in 2009?

It is eight years since journalist and software activist Suw Charman-Anderson founded Ada Lovelace Day, aiming to raise the profile of women in science, technology, engineering and mathematics and celebrate their achievements.

The day is named after Lord Byron's daughter Ada, a mathematician who worked with Charles Babbage to create and program the world's first general purpose computer, the analytical engine, creating the precursor to modern programming.