| A | B |
|---|
| John Napier | Napier Bones |
| Blaise Pascal | Automatic calculating machines |
| Gottfried Leibnez | Inventes calculus |
| Charles Xavier Thomas | Arithometer |
| Joseph Jacquard | Jacquards lume |
| Charles Babbage | Monitor computing device |
| George Scheutz | Sweetish calculating machine |
| Augusta Ada Byron | First female computer scientist |
| Herman Hollerith | Automatic senses bereau |
| Thomas Watson Jr. | IBM |
| Alan Turing | Turing machine |
| George Stibitz | Digital calculator |
| John Atanasoff | Electronic computer |
| Dr. Howard Aiken | Mark 1 computer |
| Dr. John Mauchly & Presper Eckert | Eniac computer |
| John Bardeen, William Shockly, & Walter Brittain | Transister computers |
| John von Neumann | Stored program concept |
| Dr. Daniel Slotnick | Heliac computer |
| Robert Noyce & Jack Kilby | Intergrated circuit |
| Alan Kay | Interface |
| Grace Hopper | Cobol |
| Ted Hoff | Microprocessing |
| Ed Roberts | 1st personal computer |
| Donald Knuth | Text type setting system |
| Steve Jobs & Steve Wozniac | Apple computer |
| Bill Gates & Paul Allen | Microsoft |
| Steve Case | co-founder of AOL |
| Lawrence Allison | Oricle database |
