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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- the abacus: the abacus was the first attempt to build a device that calculate arithmetic operations. 2- the bones: a more advanced way to calculate and in this case it made easier to multiply or divide 3- the paper with holes: it was like a computer program in that times, it was a stiff paper that haves holes, each hole have diferent digital information 4- Pascal calculator: it was the first "like-a-computer" tool, Pascal invented it because his father employment was al related with math operations so he invented its calculator to help him. 5- John Von Newman- He is known as the father of modern computers, because he invented the designed that now a days computers have. (Memory, Control Unit, Input and Output devices, printer) only that due to the lack of materials, he could never succesfully achieve to make fully operational his computer, he was tought to be too advanced for his time. 6- The fist programer was a women, she was a woman af a whealty family that had a big interest on the computers, as many people of the time would tought that she was un able to relate with computers because of the fact of being a woman (meaning that she had no education) she was not the case, she even had more than one degree thanks to the oportunity that she was given by being of an influential family.

7- The apple 1 was the first personal computer invented it was of wood, it was invented by the company apple, this computer was arevolutionary creation, as it was the first home computer that had an individual screen and a small shaped boady. 8- IBM created a computer that saves and storage all its information in magnetic record devices, this devices where a really good way to store information, as they had pleanty of space to storage information, but due to its recording process, in order to rewind the magnetic record devices, you would have to go all over the information and stop in a random place till you achieve to find the information you where looking for. Every one of this inventions were important because, from each one of them the computers start to grow, for example if the abacus wasn'tinvented probably the computers wouldn't be able to make arithmetic operations, also they probably couldn't exist. Each one of them are link together, becuase if one of them didn't existed the other couldn't exist, and probably now a day's we wouldn't have computers, so imagine our now a day's life without one.