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First Generation
EDVAC (Electronic Discrete Variable Automatic Computer) was one of the earliest electronic computers. It was built by Moore School of Electrical Engineering, Pennsylvania. Along with ORDVAC, it was a successor to the ENIAC. Unlike ENIAC, it was binary rather than decimal, and was designed to be a stored-program computer. -
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Second generation
Fortran computer programs have been written to support scientific and engineering applications, such as numerical weather prediction, finite element analysis, computational fluid dynamics, geophysics, computational physics, crystallography and computational chemistry. -
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Third Generation
The third generation of computers introduced used IC (Integrated Circuit) in computers. Using IC's in computers helped reduce the size of computers even more than second-generation computers, and also made them faster. Nearly all computers since the mid to late 1960s have utilized IC's. -
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Fourth Generation
The fourth generation of computers took advantage of the invention of the microprocessor, commonly known as a CPU (Central Processing Unit). Microprocessors, with integrated circuits, helped make it possible for computers to fit easily on a desk and for the introduction of the laptop.