| A | B |
|---|
| john napier | napier bones |
| blaise pascal | automatic calculating machine |
| gottfried leibnez | invented calculus |
| charles xavier thomas | made arithmometer |
| joseph jacquard | jacquard lume |
| charles babbage | 1st modern computing device |
| george scheutz | sweedish calculating machine |
| augusta ada byron | 1st female computer scientist |
| herman hollerith | atomatic senses buro |
| thomas watson, jr. | IBM |
| alan turning | turning machine |
| george stibitz | modern K/ digital calculator |
| john atanasoff | electronic calculating machine |
| dr. howard aiken | mark 1 computer for IBM |
| dr. john mauchly and presper eckert | eniac |
| john bardeen, william shockley and walter brittain | transistors |
| john von neumann | stored program concept |
| dr. daniel slotnick | illiac |
| robert noyce and jack kilby | integrated circuit |
| alan kay | interfaces |
| ted hoff | microprocessor |
| ed roberts | first pc/altair |
| donald knuth | text typesetting system |
| steve jobs and steve wozniak | started apple computers |
| bill gates | microsoft |
| steve case | aol |
| lawrence ellison | oracle |
