1991 Soviet coup attempt

World Wide Web

Tim Berners-Lee invented the World Wide Web at CERN in 1989

Colossus computer

Colossus, 1943: first programmable computer to decrypt Nazi codes

Smallpox vaccine

Edward Jenner created the first vaccine in 1796

Sergey Brin

Sergey Brin and Larry Page founded Google in 1998

Universal Turing machine

Alan Turing introduced the Turing machine in 1936

Software bug

First computer bug: A moth in Harvard Mark II, 1947