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Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

Blaise Pascal   Pascaline-1642  
Gotfried Wilhelm von Leibniz   Stepped Reckoner - 1670  
Charles Babbage   Difference machine (similar to a calculator) - 1842  
Herman Hollerith   Tabulating machine-1890  
John Mauchly and J. Presper Eckert   Worked on ENIAC (Electronical Numerical Integreation and Calculator - 1946  
Alan Turing   The Enigma - 1930-1940's  
Jon Von Neumann   EDVAC (Electronic Discrete Variable Automatic Computer) 1947  
William Shockley, John Bardeen, Walter Brittain   Transistor- 1947  
Jack Kilby   First integrated Circuit- 1958  
William Gates III   Founder of Microsoft Corporation- 1975  
Paul Allen   Co-founder of Microsoft Corporation- 1975  
Thomas and John Knoll   Creators of Adobe Photoshop- 1988  
Adam Fischer, Peter Halacsy, Peter Arvai   Prezi-  
Grace Murray Hopper   COBOL- 1960  
John Atanasof and Clifford Berry   First digital computer- 1939  
Howard Aiken   Mark 1- 1944  


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