| A | B |
|---|
| John Napier | Napier Bones |
| Blaise Pascal | Automattic calculating machine |
| Gottfried Leibnez | Calculist |
| Charles Babbage | 1st Modern computing device |
| Joseph Jacquard | Jacquard's loom |
| Charles Xavier Thomas | Arithmometer |
| Georg Scheutz | Sweedish calculating machine |
| Augusta Ada Byron | 1st female computer scientist |
| Herman Hollerith | Automatic sensus machine |
| Thomas Whatson, Jr. | IBM |
| Alan Turing | Turing Machine |
| George Stibitz | Digital calculator |
| John Atanasoff | Electronic digital computer |
| Dr.Howard Aiken | Mark 1 Computer for IBM |
| Dr. John Mauchly & Presprer Eckert | Eniac Computer |
| John Bardeen, William Shockley, & Walter Brittain | Transistors |
| John Von Neumann | Stored program concept |
| Dr. Daniel Slotnick | Illiac Computer |
| Robert Noyce & Jack Kilby | Intigrated Circuits |
| Alan Kay | Interfaces |
| Grace Hopper | Cobol |
| Ted Hoff | 1st microcomputer |
| Ed Roberts | Alter PC |
| Donald Knuth | Text Typeseting system |
| Steve Jobs & Steve Wozniak | Started Apple Computer |
| Bill Gates & Paul Allen | Microsoft |
| Steve Case | AOL |
| Lawrence Ellison | Orical |
