Adrian Johnstone was one of the invited speakers at the "History of Computing beyond the Computer" event organised by British Society for the History of Mathematics at the University of Oxford, March 21-22, 2018.

Flow diagram using Babbage's Notation of the output apparatus (printer) of the Analytical Engine and Difference Engine No.2

The meeting looked at the people and the science underpinning modern software and programming. Adrian talked on Charles Babbage's design notation, which reported on the work that was done at Royal Holloway on the grant "Notions and notations: Babbage's language of thought", funded by the Leverhulme Trust. 

You can read more about this topic by following this link.