The history of electronic calculator
[DOC File]Procedure - Environmental Protection Department
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Revision History Revision Date Description Sections Affected Revised By Approved By 01-01-2006 First issue - - - - K.Y. Ko Purpose This procedure describes the method for identifying and evaluating environmental aspects related to the electronic calculator manufacturing carried out by HKGEAC respectively and determining the significance of ...
[DOC File]History - Computer Action Team
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history / Mechanical Calculator: Blaise Pascal, 1640 (age 17). 17th and 18th century: many mechanical calculators, no storage, no programs. Jacquard’s loom: 1801. Used punched cards! Many more calculating machines… Herman Hollerith’s punch card machine did the 1890 census in 6 weeks. 1945: ENIAC. First (perhaps) electronic, not stored ...
[DOC File]History of Computers
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The first electronic computers date back only to the 1940s. Generation 0: Mechanical Computers (1642-1945) The earliest prototype of a calculator that has survived is that of Blaise Pascal who built a mechanical calculator in 1642 (he was 19).
[DOC File]A History of Computers
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The programming language Ada was named in honour of Lady Lovelace, the first computer programmer. In the late 1930s John Atanasoff of Iowa State University, with his graduate student Clifford Berry, built the prototype of the first automatic electronic calculator. One …
[DOC File]A Brief History of Spreadsheets - RTMS Business
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This electronic spreadsheet type application was used for budgeting at Bell Canada, AT&T, Bell operating companies, and General Motors. They received a US patent (no. 4,398,249) for LANPAR in August 1982 after 12 years of litigation.
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