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1946: The creation of the world's first large-scale electronic electronic computer, the ENIAC (Electrical Numerical Integrator and Calculator) is announced
1951 to 1959: first generation computers appear. These were capable of calculating with a speed of milliseconds, in addition to being programmed in machine language.

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The second generation of computers (1959-1964) was characterized by the creation of transistors, which came to replace electronic valves. These components, in addition to being smaller, were more efficient and cheaper. The computer went through several transformations and was improved over time, following the advances in the areas of mathematics, engineering, electronics. That's why there isn't just one inventor. It was in the Post-World War II years that, with the incorporation of new technologies then developed, the computer project became a reality. According to the systems and tools used, the history of computing is divided into Five generations of computers.

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the fourth generation of computer started in 1971 when intel released the first microprocessor, intel 4004

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Third Generation of Computers (1964 – 1971): Jack Kilby invented the Integrated Circuit. This Integrated Circuit replaced the use of transistors in the third generation of computers. Integrated circuits themselves consist of many transistors, capacitors and resistors and due to this third generation computer are smaller in size, efficient and more reliable. For example, CDC 1700, IBM-360 Series, etc.