| A | B |
|---|
| John Napier | Napier bones for calculating |
| Blaise Pascal | Automatic calculator |
| Gottfried Leibnez | Calculus |
| Chhales Xavier Thomas | Arithmometer |
| Joseph Jacquard | Jacquard lume |
| Chales Babbage | First modern computing devices |
| Georg Scheutz | Swedishh calculating machine |
| Augusta Ada Byron | First female computer schientist |
| Herman Holerith | Automatic scenes bureau |
| Thomas Watson, Jr. | IBM |
| Alan Tuning | Turing machine |
| George Stibitz | Digital calculator |
| John Atanasoff | First electronical calculator |
| Dr. Howard Aiken | Mark 1 computer for IBM |
| Dr. John Mauchly & Presper Eckert | Eniac- first computer |
| JPhn Bardeen, William Shockley & Walter Brittain | Transistors |
| John von Neumann | Stored programm soncept |
| Dr. Daniel SLotnick | Iliac computer |
| Robert Noyce & Jack Kilby | First integratd circuit |
| Alan Kay | Interface |
| Grace Hopper | Cobo |
| Ted Hoff | MIcroprocessor |
| Ed Roberts | Altait- first OC |
| Donald Knuth | Text typing system |
| Steve Jobs &Steve Wozniak | Apples |
| Bill Gates & Paul Allen | MIcrosoft |
| Steve Case | AOL |
| Lawrence Ellison | Oracle( 2nd largest company after MIcrosoft) |
