History of Computers By jjennings16 Oct 30, 1906 Lee De Forest invents the electronic tube Jun 15, 1911 IBM is formed on June 15, 1911 Nov 1, 1923 Television Electronic was invented by Philo Farnsworth Nov 1, 1930 Vannevar Bush develops a partly electronic Difference Engine Nov 1, 1939 George Stibitz develops the Complex Number Calculator - a foundation for digital computers Nov 1, 1945 The term computer ‘bug’ as computer bug was first used by Grace Hopper Nov 1, 1960 The Common Business-Oriented Language (COBOL) programming language is invented. Nov 1, 1965 Andries van Dam and Ted Nelson coin the term "hypertext" Aug 6, 1981 The World Wide Web is launched to the public on August 6, 1991 Nov 1, 2006 Skype announces that it has over 100 million registered users.