The very history of computers can be divided into peculiar segments, which are called generations. The change of these same generations is probably primarily associated with various changes in the physical principles of the work directly, as well as the technology of the production of various elements that are included in the computer. Four generations are presented in total.
First generation:
A computer of the very first generation, used a variety of electronic lamps, as well as other simple elements, such as resistors, capacitors and other elements that were necessary for a variety of work. Nowadays, these first -generation computers are no longer used.
Second generation
The second, by the way, is also the element base of computers of the second generation was only transistors. They already took up much less space, consumed much less energy and were already more reliable in their work, which allowed to produce cars more compact size, as well as the cheapest and most economical. This second generation of computers belongs to a very famous computer-BESM-6.
The third generation
But a computer of the third generation, were owed to the emergence of a revolutionary idea, to make various elements of the processor represented in the form of one crystal. Devices that were made in this way are called certain integrated schemes. In the manufacture of computers of this generation, as a result of one of the series of all kinds of technological operations, a huge number of different elements are immediately created. One of the very first third -generation computer, were cars of one of the American firms – IBM.
The fourth generation
The moment of the very integrated schemes came in improving these very integral schemes when a man managed to recreate a whole processor on one such crystal. The appearance of the processor in 1971, of course, meant the transition to the fourth generation of our computers. The most famous examples of such machines are of course IBM PC, as well as Apple.