| A | B |
| John napier | napier bones |
| Blaise pascal | automatic calculator machine |
| Gottfried leibnez | calculase |
| Charles xavier thomas | arithmometer |
| Joseph jacquard | jacquard loom |
| charles babbage | 1st modern computing machine |
| George Scheutz | swedish calculating machine |
| Augusta ada byron | first female computer science |
| Herman hollerith | co. ibm |
| Thomas watson,Jr. | President of ibm |
| Alan turing | turing machine |
| George stibitz | digital calculator |
| John Atanasoff | model k digital calculator |
| Dr. Howard Aiken | 1st digital computer |
| Dr.john Mauchly & Presper Ecket | eniac |
| john bardeen william shockely and walter brittain | 1st transistor |
| John von Neumann | mochtley |
| Dr.daniel slotnick | 1st super computer |
| Robert Noyce and Jack kilby | first circut |
| Alan Kay | gui interface |
| Grace hopper | cobol |
| ted hoff | micro processor |
| Ed roberts | he made the first person computer |
| donald knuth | tex type setting |
| Steve jobs and steve wozniak | Apple computer |
| Bill gaters and paul allen | microsoft |
| Steve case | aol ceo |
| Lawrence Ellison | orical |