Famous Inventions / Inventors

Famous Inventions / Inventors. Calculating Machines and Computers: INVENTION YEAR INVENTOR NATIONALITY Adding Machine 1642 Blaise Pascal French Cash Register 1879 James Ritty American Electronic Digital Computer 1946 J.P. Eckert, J.W. Mauchly American Electronic Pocket Calculator 1972 J.S. Silby, J.D. Merryman American Parallel Computing 1979 Seymour Cray American ................
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