| A | B |
|---|
| Charles Babbage | Invented Difference Engine and Analytical Engine |
| Hermann Hollerith | Invented the tabulating machine |
| Tabulating Machine | Invented to meet the need for a better way to count the 1890 Census |
| Colossus | Invented to crack German Code |
| ENIGMA | German Code Machine |
| ENIAC | Used to quickly compute firing tables during WWII |
| Transistor | Replaced vacuum tubes in computers |
| Integrated Circuits | a small electronic device made on silcon |
| Intel | Invented the first microprocessor |
| Microprocessor | all features of a computer that makes it "think" are placed on this invention |
| Apple II | The first personal computer sold to individuals (general public) |
| 1977 | The year the first personal computer (PC) was sold. |
| "Thinking" Parts | CPU, Memory, Input and Output Controls |
