| A | B |
|---|
| Abacus | 1st calculating device |
| John Napier | developed Napier's Rods |
| Blaise Pascal | developed Pascaline, adding machine |
| Joseph Jacquard | developed weaving machine controlled by punch cards |
| Herman Hollerith | invented Tabulating Machine, which stored info on punch cards |
| Charles Babbage | developed the Difference Engine & Analytical Engine |
| Ada Lovelace | wrote a computer language for the Analytical Engine |
| Steve Jobs | developed Apple computer |
| Bill Gates | developed Windows computer language |
| Jack Kirby | designed the integrated circuit |
| M.E. Hoff | developed microprocessors |
| Howard Aiken & Grace Hopper | designed Mark I |
| John Eckert & John Mauchly | developed ENIAC |
| John Von Neumann | developed the EDVAC |
| vacuum tubes | 1st generation |
| transisters | 2nd generation |
| integrated circuits | 3rd generation |
| microprocessor | 4th generation |
| microprocessor & AI | 5th generation |
