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2. Describe the 4 generations of computers. (Use examples and descriptions of how the computers were and worked in each one). Do you think we already are in a fifth generation? If so explain on what you base your statement, give examples.

- The first generation was marked due to two reasons: 1. the vacuum tubes that worked as a binary system, depending if they were on or off meant if they represented a 0 or a 1. 2. John Von Neuman stated that every computer needed a memory, an input, an output, a control unit, and a logic arithmetic unit.

- The second generation is when the transistors appeared in 1960´s. this marked a big change in computers because they weren't the size of a university, they now worked in a small room.

- The third generation was about the integrated circuit (silicon-made). This made the computers even smaller because one integrated circuit replaced lots of transistors

-The last and the must controversial was the fourth generation were the microprocesor and the first computer for home appeared.

In the beginnig, computers were specially for work uses because they were too big. Nowadays we use the microsprocessor but it has one difference to the first ones: it fitted much more integrated circuits. Scientists are now researching to use cells the size of a fingernail or to base the microprocessors on diamonds or quantic physics instead of silicon that is being used.

The first generation computers worked as a calculator and used the binary system. In the second generation the computers were not only for calculations if not, there were also used for other necessities and they din´t have many memory. In the third generation the computers were more capable and they had more memory than the first computer because of the new system of operation. In the fourth generation computers became (as in every generation) smaller, and they where easier to use. In this generation appeared the personal computer. However, the fourth generation has changed a lot, so maybe we are in a fifth generation. In my opinion, I think that we are already in a fifht generation because the new computers have very good and new material thta it is amaizing and with the ipad, iphone and among others, there are like a computers so now you can have a computer in your hands without keybord and mouse. And nowadays the computers are too capable for doing many things that are a great technological advances.