Donald Davies
Donald Watts Davies, (7 June 1924 – 28 May 2000) was a British computer scientist and Internet pioneer who was employed at the UK National Physical Laboratory (NPL). During 1965-67, he and his team at the National Physical Laboratory invented modern data communications, including packet switching, high-speed routers, layered communication protocols, hierarchical computer networks and the essence of the end-to-end principle, concepts that are used today in computer networks worldwide.