Timeline
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Blaise Pascal | Pascaline- mechanical calculating device; 1642
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| Gottfried Wilhelm von Leibniz | Stepped Reckoner- device to add/subtract/multiply/divide but malfunctioned; 1670
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| Charles Babbage | Analytical engine- calculating machine, punched cards to store info; 1890
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| Herman Hollerith | Tabulating machine- used electricity instead of gears to calculate; 1890
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| John Atanasoff | Atanasoff-Berry Computer; binary number system used in computers; 1939
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| Clifford Berry | Atanasoff-Berry Computer; binary number system used in computers; 1939
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| Mark 1 | Devised by Howard Aiken;1st universal calculator; 1944
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| John Mauchly | Electronic Numerical Integration and Calculator- solve mathematical problems fast; 1946
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| J. Presper Eckert | Electronic Numerical Integration and Calculator- solve mathematical problems fast; 1946
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| Alan Turing | Turing Machine (The "Enigma")- developed idea of a universal machine; Late 1930s/ early 1940s
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| Jon von Neumann | EDVAC- Electronic Discrete Variable Automatic Computer w/ Mauchly & Eckert; Inspired construction of EDSAC; 1947
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| Transistor | Invented by William Shockley, John Bardeen & Walter Brittain; replaced tubes to make computers more efficient and reliable
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| Grace Murray Hopper | COBOL- Commom Business Oriented Language; 1950s
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| Jack Kilby | Developed 1st integrated circuit; 1958; invented 1st hand held calculator;
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| William Gates 3 | Founder of Microsoft Corporation; Started Microsoft company w/ Paul Allen 1975
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| Paul Allen | Co-founder of Microsoft Corporation; Owner of Portland Trail Blazers
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| Thomas Knoll | Software engineer; Created Adobe Photoshop; 1988
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| Allan Knoll | Software engineer; Created Adobe Photoshop; 1988
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
dmafnas
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