| Inventor | Invention |
| Blaise Pascal, June 19, 1642 - 1662 | Pascaline 1642 |
| Gottfried Willhelm von Leibniz July 1, 1646 - 1716
Germany | Stepped Reckoner 1670 |
| Charles Babbage 1792 - 1871 | Analytical Engine - calculating machine 1842 |
| Herman Hollerith 1860 - 1929
New York city | Tabulating Machine 1890 |
| John Atanasoff 1903 - 1995
Clifford Berry 1918 - 1963 | Atanasoff - Berry Computer (ABC) 1939 |
| Mark 1 | The first computer 1944 |
| John Mauchly 1907 - 1980
J. Prsper Eckert 1919 - 1995 | ENIAC (Electric Numerical Integration and Calculator) 1949 |
| Alan Turing 1912 - 1954 | The "Enigma" |
| Jon von Neumann 1903 - 1957 | EDVAC (Electronic Discrete Variable Automatic Coomputer 1947 |
| Transistor 1947 | William Shockley
Jhon Bardeen
Walter Brittain |
| Grace Murray Hooper 1906 - 1992 | COBOL (Common Business Oriented Language) |
| Jake Killby 1923 - 2005 | 1st integrated Circuit 1958 |
| William Gates 3 Oct. 28, 1955 | Founder of Microsoft Corporation |
| Paul Allen Jan 21 1953 | Co founder of Microsoft Coporation |
| Thomas Knoll 1962
John Knoll 1987 | Software engineers
Brothers |
| Peter Arvai
Peter Halascy
Adam Somlai Fisher | Prezi 2009
CEO
Co founder
Co founder principle in Arts |