| A | B |
|---|
| John Napie | Napier bones. |
| Blaise Pascal | Automatic calculating machine. |
| Gottfried Leibnez | Invented calculus. |
| Charles Xavier Thomas | Arithmometer. |
| Joseph Jacquard | Jacquard slum. |
| Charles Babbage | First modern computing device. |
| Georg Scheutz | Seedish calculating machine. |
| Augusta Ada Byron | First female computer sientist. |
| Herman Hollerith | First calculating machine for census. |
| Thomas Watson, Jr. | Started IBM. |
| Alan Turing | Turing machine. |
| George Stibitz | Swiss calculating machine. |
| John Atanasoff | First digital computer. |
| Dr. Howard Aiken | Mark 1 computer for IBM. |
| Dr. John Mauchly & Presper Eckert | Eanic. |
| John Bardeen, William Shockley & Walter Brittain | Transistors. |
| John Von Neumann | Storeage on computer. |
| Dr. Daniel Slotnick | First super computer "ILLIAK". |
| Robert Noyce & Jack Kilby | First integrated circuit. |
| Alan Kay | Interface. |
| Grace Hopper | Mother of "cobol". |
| Ted Hoff | Microprocessor . |
| Ed Roberts | "Altar". |
| Donald Knuth | Text type setting system. |
| Steve Jobs & Steve Wozniak | Founded Apple |
| Bill Gates & Paul Allen | Founded Microsoft |
| Steve Case | Invented AOL |
| Lawrence Ellison | Started PC company “oracle” |
