Month: January 2013

Computers Syllabus Machine

Computers computers that have been appearing since the 1940s have been grouped in 5 generations, which differ in their components. However the real computing Revolution did not until the appearance of microprocessors. First generation 1940-1960 Harvard University establishes an agreement with Enterprise IBM to create a computer of a general nature. This machine was operational in 1944 and had the ability to store 72 numbers of 23 figures, used punched cards to enter numbers and operations. His speed was not very high, requiring ten seconds to perform a multiplication and eleven for a division E.N.I.A.C. first fully electronic built computer. This machine occupied around a basement at the University, weighed 30 tons and required an entire air conditioning system, but was able to make five thousand arithmetical operations in one second.

John von Neumann; his ideas were so fundamental that it is considered the father of computers. The fundamental idea of Neumann was let live side by that memory side data with instructions, so that the computer could be programmed via these data and do not wire that electrically programmed computer operations. In this generation include the appearance of the first programming languages that allowed substitute programming in machine language, i.e. 1 and 0, which were entered directly into the computer, by a symbolic programming, translating symbols of natural language to machine language. Second generation 1960-1965 is characterized by the change of the vacuum valve by transistors and an increase in memory capacity. Circuits with transistors, reduce the size of the machines.

The transistor is an electronic device consisting of a crystal of Silicon. Its operation is simple, has two possibilities, transmit or not transmit. His appearance was that computers were faster than small and cheap. In this generation the auxiliary memory is expanded and created the large capacity magnetic disks. Printers and scanners were designed and developed programming languages, appear the new programming language called high level languages.

Digital Computers

Conceptually, the current digital computers are very similar among themselves, since all of them are based on an architecture proposed in 1946 by the American John von Newmann (1903-1957). Now, nearly all current computers can be classified into four basic types: personal computers, workstations, minicomputers and mainframes. Personal computers (Personal Computer, PC) have a size suitable for a desktop and are economically more affordable. Originally, PCs were conceived and designed especially for home use, although they are nowadays used in a multitude of areas. Within this category of computers include laptops, which are very comfortable to carry, due to its reduced weight and size. The workstations have, in general, greater benefits (calculation, graphics, communications,) to PCs, and are used, especially in labour offices.

However, the differences between both types of computers are increasingly smaller, and the two are considered microcomputers. The minicomputers are higher power and size as any PC or workstation and, therefore, more expensive. These computers are used mainly in universities, laboratories or medium-sized companies. But when the required performance are still higher, then used the mainframe, which is a much bigger and more expensive computer. This computer is mainly used in research centers, government institutions and large companies. To this category belong the supercomputers calls, which are large computers that exist in the world, capable of performing billions of instructions per second. If you liked this article and want to include it on your website, you can do so, provided you cite and source at to find out more, visit the Carlos Pes basic computer course.

Conclusions

The word to decide in the Latin is ' ' decidere' ' that it means to eliminate all the other alternatives. When we decide to make the good the evil leaves of being an option, now to choose the evil we exclude the alternative of the good, of the one not to walk in the two ways at the same time. The time and the thoughts I heard of Amorim professor, who 75% of the time we think about the past, us we feed and we remoemos facts that they had occurred with us or that they had left to happen, we martirizamos in them for lost chances and wasted possibilities, we are the carrascos of we ourselves. It still said that 25% of the time we think about a future that not yet arrived, in worrying and if afflicting with ilusrias and fantasiosas situations that our fertile mind creates and imagines. At last it concludes saying that the statistics that made this note, he disclosed that we use only 5% of our thoughts in the gift, in ideas and projects that executed today will be able to make difference for us and for who we love. I as soon as perceive to invest time stops preparing in them for the future, in the gift, studying, working, using the creativity, elaborating scenes and creating real goals and targets and you reached instead of divagar between last and future we will have more conditions probable to have a better future. , Generally first we think, later we feel, then we speak stops later acting and thus spoon the results. Conclusions Could be here divagando and filosofando concerning the time, for much time, but the objective is not this, goes to reflect and to rethink our relationship with the time, where and so that she has been dedicated most of our existence, we go to look for not to kill the time therefore you make to it is our life that we are playing it are.