| A | B |
|---|
| John Napier | napier bones |
| Blaise Pascal | automatic calc machine |
| Gottfried Leibnez | calculus |
| Charles Xavier Thomas | arith moniter |
| Joseph Jacquard | jacquards loom |
| Charles Babbage | first modern computer device |
| George Scheutz | sweedish calculating machine |
| Augusta Ada Byron | first female scientist |
| Herman Hollerith | automatic census bureau |
| Thomas Watson Jr | President of IBM |
| Alan Turning | turning machine |
| George Stibitz | digital calculator |
| John Atanasoff | first special purpose electronic digital computer |
| Dr. Howard Aiken | perfected Mark I computer for IBM |
| Dr. John Mauchly & Presper Eckert | the eniac |
| John Bardeen William Shockley & Walter Brittain | the first transistor |
| John von Neumann | stored program concept |
| Dr. Daniel Slotnick | elliac4 |
| Robert Noyce & Jack Kilby | first intergrated circuit |
| Alan Kay | interface |
| Grace Hopper | Cobal programming |
| Ted Hoff | microprocessor |
| Ed Roberts | built the first personal computer the Altair |
| Donald Knuth | tex typing system |
| Steve Jobs & Steve Wozniak | Apple computers |
| Bill Gates & Paul Allen | Microsoft |
| Steve Case | AOL-CEO |
| Lawrence Ellison | Orical |
