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Computer History
| INVENTOR | INVENTION |
|---|---|
| Blaise Pascal | Pascaline Calculator - 1642 |
| Gottfried Wilhelm von Leibniz | Stepped Reckoner - 1670 |
| Charles Babbage | Analytical Engine - 1842 |
| Herman Hollerith | Tabulating Machine - 1890 |
| John Atanasoff & Clifford Berry | Atanasoff-Berry Computer (ABC) - 1939 |
| Howard H. Aiken & Grace Murray Hopper | Mark 1 - 1944 |
| John Mauchly & John Pesper Eckert | Electronic Numerical Integration and Calculator (ENIAC) - 1946 |
| Alan Turing | Turing Machine - 1930-1940 |
| Jon von Neumann | Electronic Discrete Variable Automatic Computer (EDVAC)-1947 Electronic Delay Storage Automatic Calculator (EDSAC)-1949 |
| William Shockley, John Bardeen, and Walter Brittain | Transistor - 1947 |
| Jack Kilby | 1st Integrated Circuit - 1958 1st hand held calculator |
| Bill Gates and Paul Allen | Microsoft - 1975 |
| John and Thomas Knoll | Adobe Photoshop - 1988 |
| Peter Arvai, Peter Halcsy, and Adam Somlai Fischer | Prezi - 2009 |