| A | B |
|---|
| John Napier | Napier Bones |
| Blaise Pascal | automatic calculating machine |
| Gottfried Leidnez | calculus |
| Charles Xavier Thomas | arithmometer |
| Joseph Jacquard | Jacquard's loom |
| Charles Babbage | first modern computing device |
| Georg Stibitz | digital calculator |
| Augusta Ada Byron | first female computer scientist |
| Herman Hollerith | automatic census bereau |
| Thomas Watson, Jr. | president of IBM |
| Alan Turing | Turing machine |
| George Stibitz | digital calculator |
| John Atansoff | first special purpose electronic and digital computer |
| Dr. Howard Aiken | perfected Mark 1 computer for IBM |
| Dr. John Mauchly & Presper Eckert | Eniac |
| John Bardeen, Willian Shockley, & Walter Brittain | first transister |
| John von Neumann | stored program concept |
| Dr. Daniel Slotnick | Illiac 4 |
| Robert Noyce & Jack Kilbey | first integrated circut |
| Alan Kay | GUI (graphical user interface) |
| Grace Hopper | cobol |
| Ted Hoff | microprocessor |
| Ed Roberts | first personal computer |
| Donald Knuth | TEX type setting system |
| Steve Jobs & Steve Wozniak | apple computer |
| Bill Gates & Paul Allen | microsoft |
| Steve Case | AOL |
| Lawrence Ellison | Oracle |
