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25 Cards in this Set
- Front
- Back
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Abacus |
-Used in Ancient times -For Counting |
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Pascal’s Adder |
-Blaise Pascal- 1642 -First digital calculator |
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Second digital calculator |
Gottfried Wilhelm von Liebniz- 1646-1716 |
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Jacquard’s Loom |
-Joseph Marie Jacquard- 1800 -Manufacturing Textiles |
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Tabulating Machine |
-Herman Hollerith- 1860-1929 -Used for summarizing information and accounting |
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Difference Machine |
-Babbage- 1822-1833 -Tabulate Polynomial Functions |
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Analytical Machine |
-Babbage- 1830-1871 -Improved difference machine- Hardcopy printing, graphing, division and multiplication |
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The First Digital Computer |
German Konrad Zuse- 1939 |
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Atanasoff- Berry Computer |
-John Atanasoft- 1939 -Solve systems of linear equations |
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Colossus Computer |
-Tommy Flowers- 1943 -First programmable, electronic, digital computer |
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Mark I |
-Howard Aiken- 1944 -Automatic Sequence Controlled Calculator (ASCC) -Named by Harvard University Staff |
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EDVAC |
-John von Neumann- 1946 -Von Neumann Architecture (programs being stored in a computer) -Worked on improved ENIAC called EDVAC |
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ENIAC |
-Mauchley and Eckert- 1946 -Electronic Numerical Integrator and Calculator -Electronic general-purpose computer |
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UNIVAC |
-Mauchley and Eckert- 1951 -The first commercial computer (United States) |
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ENIAC In Detail |
-Best known as first fully electronic computer -18,000 vacuum tubes -1,500 relays -20 x 40 foot room -low reliability, lots of power, air conditioning -Six women did the bulk of the programming |
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First Generation |
-1940-1956 -Vacuum tubes and/or relays |
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Second Generation |
-1956-1963 -Transistors |
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Third Generation |
-1964-1971 -100s of transistors into an integrated circuit on a silicon chip |
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Fourth Generation |
-1971-2001 -Main components of a computer on a silicon chip= microprocessor |
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Fifth Generation |
-2001- Present -Multiple processors on one chip |
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Moores Law |
-1965 Gordon Moore predicted that the power of a silicon chip of the same price would double about every 2 years for the next 10 years. |
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Integrated Circuit Benefits |
Microchip, silicon chip, computer chip -Reliability -Size -Cost -Efficiency -Speed |
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Taxonomy |
-Desktop -Workstation -Laptop -Embedded computers -Handheld devices -Servers -Mainframes -Supercomputers |
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The Malleable Matrix |
-Cells- the intersection of a row and column -Addresses- column letter and row number |
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Precedence of Spreadsheet Commands |
-reference operators -negation -percent -exponents -division/multiplication -addition/subtraction |
