John Wallace

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201	PDF Document Add to Reading List Source URL: invention.smithsonian.org Language: English - Date: 2006-01-12 14:10:03 Punched card Unit record equipment Wallace John Eckert Herb Grosch Grosch IBM Keypunch ENIAC Tabulating machine Computing Computer hardware Technology
202	PDF Document Add to Reading List Source URL: invention.smithsonian.org Language: English - Date: 2006-01-12 14:10:02 Observatory Computing Herb Grosch Wallace John Eckert Grosch