| A | B |
|---|
| John Napier | Napier bones |
| Blasie Pascal | automatic calculator machine |
| Gottfried Leibnez | calculus |
| Charles Xavier Thomas | arithmometer |
| Joseph Jacquard | Jacquard's loom |
| Charles Babbage | first modern computing device |
| Georg Scheutz | Swedish calculating machine |
| Augusta Ada Byron | first female computer scientist |
| Herman Hollerith | automatic census bureau |
| Thomas Watson, Jr. | president of IBM |
| Alan Turing | Turing machine |
| George Stibitz | digital calculator |
| John Atansoff | first special purpose electronic digital computer |
| Dr. Howard Aiken | Mark 1 computer for IBM |
| Dr. John Mauchly and Presper Eckert | Eniac |
| John Bardeen, William Shockley, and Walter Brittanin | first transiter |
| John von Neumann | started program concept |
| Dr. Daniel Slotnick | Illiac 4 |
| Robert Noyce and Jack Kilby | first intigrated circuit |
| Alan Kay | graphical user interface (GUI) |
| Grace Hopper | Cobal(computer language) |
| Ted Hoff | microprocessor |
| Ed Roberts | built first personal computer (Altar) |
| Donald Knuth | Tex type setting system |
| Steve Jobs and Steve Wozniak | Apple computers |
| Bill Gates and Paul Allen | Microsoft |
| Steve Case | AOL/CEO |
| Lawrenece Ellison | Orical |
