1890, Herman Hollerith invented the tabulating machine
1911, he founded IBM using punch cards to tabulate numbers
1947, scientists at Bell Labs invented the transistor which replaced the large vacuum tubes
1959, Jack Kilby  invented the microchip which allowed a computer to have one circuit board
1977, Apple Computer was released to the public
1994, the WWW(World Wide Web) becomes available to everyone
2007, Apple smart iPhone