| A | B |
| John Napier | Napier Bones |
| Blaise Pascal | Auto Calculating Machine |
| Gottfried Leibnez | calculas |
| Charles xavier Thomas | Arithimomter |
| Joseph Jacquard | Jacquards Loom |
| Charles Babbage | first modern computing device |
| George Scheutz | sweedish calcualting machine |
| Agusta Ada Byron | first female comp. scientists |
| Herman Holloerith | asb |
| Thomas Watson Jr. | pres. of IBM |
| Alan Turing | turing machine |
| George Stibitz | digital calculator |
| Johon Atanasoff | first special purpose electronic comp. |
| Dr. Howard Aiken | mark 1 for ibm |
| Dr. John Mauchly& Presper Eckert | Eniac |
| John Bardeen | first transistor |
| John von Neuman | stored program concept |
| Dr. Daneil Slotnick | Elliac 4 |
| Robert Noyce & Jack Kilby | first intergrated circuit |
| Alan Kay | interface |
| Grace Hopper | cobal |
| Ted Hoff | microprocesser |
| Ed Roberts | ALTAR |
| Donald Knuth | text typing system |
| Steve Jobs& Steve Woxniak | apple |
| Bill Gates & Paul Allen | microsoft |
| Steve Case | aol ceo |
| Lawrence Ellison | Oracle |