Ex+1+T2+Question+3

3. Mention at least 8 things that happened during the computer pre-history period mentioned in class. Explain why they are considered important enough to be in such timeline.

1. abacus: the first artefact to count, you were able to do any type of equation. This invetion was important because it was the first artefact for doing calculations.

2. binary system: it is the system with which computers work nowadays. Is important because we use this system nowadays.

3.punching cards: they were used in the beginning of computers. It was importan because these cards were the first memory cards so computers were able to do more than only calculations.

4. pacaline calculator: it was a great advance in technology **//__"debido a que"__//** it was before the computer revolution and it helped with large calculations which were made quicker. Pascal used it to help his father

5. Lady Lovelace: she was the first computer programmer

6. Punched Cards: punched cards are like the grandpa of printers, instead of ink they punched the paper to create a letter which then become words and phrases.

7. Hewlet-Packard (hp): one of the first computer developers that helped mainly building the physical part as the screen...

8. IBM: the empire of computing almost since the invention of vacuum tubes up to when Apple came along with microsoft and lost its "power".