et voila c t un peu long mais bon c fini
I will try to explain you what is a computer and his main functions.
Today, a computer is usefull when you want to play games or to work.
First, i must explain you the origin of the computer . .. The first electronicals computers were made in the first half of the 20 th century. The Mark I, in 1937 was able to calculate 5 times more quickly than humans. The manufacturer was IBM. This computer was built with mechanical components. It was a great invention. In 1947, Mark II is born, his gears are replaced by electronic components. During the second World War, in 1943, the ENIAC, Electronical Numerator Integrator And Computer was made. It was used for calculations having been used to develop the bomb H.
The first data-processing error must with an insect which, attracted by heat, had come to place itself in the lamps and had created a short-circuit. In 1948, the transistor is created by the firm Bell Labs...
It makes it possible in the Fifties to make the computers less big, less greedy in power electric thus less expensive: it is the revolution in the history of the computer! The first computer with transistor was the IBM 7000 in 1960. The fist microcomputer was made in 1971. In 1971, first microprocessor, the INTEL 4004, makes its appearance. It makes it possible simultaneously to carry out operations on 4 bits. In 1976, Steve Wozniak and Steve Jobs create APPLE I in a garage. This computer has a keyboard, a microprocessor with 1 MHz, 4 KB of RAM and 1 KB of video memory.
In 1981 IBM markets the first " PC.After, Bill Gates will create a little company named Microsoft and it will become the most powerful company and the richest of the world. Currently, the PC is great if you want play video games : powerful computers, very nice pictures . .. Power means great games with very nice graphisms, sounds . ..With the apogee of internet video games become more and more interesting because meet other people is a great experience and play with them is again more interesting.You can play with chineses, americans, germans, italians, englishes . .. You can share your own vision on the world, the new products or files . ..On the contrary, it is possible to work on computer : currrently there are a lot of secretaries for example. It is easy to arrange, classify data . .. A lot of companies, more than 80 per cent have computers in theirs offices ! And the speed is a lot increased also.Moreover the report/ratio price quality is high, especially in the future.But the are some abuses : there are for example internet professionals who can do abuses... They are named hackers, they can steal your own data on your hard-drive and use it against you . .. They can obtain important passwords illegaly but it is not very frequent. At all events it is very rare to meet a good hacker on internet so do not worry ! The systems of safety depend on computers and the army too.In conclusion, we can say that the computers represent the future.
