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First Generation
Based on vacuum tubes. Operating systems were very slow. Very large in size. Production of the heat in large amount. Machine language was used for programming. Were unreliable. Difficult to program and use. -
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Second Generation
Transistors in vacuum tubes. Were smaller in comparison with the first. Were faster in comparison with the first. Generated less heat and were less prone to failure. Took comparatively less computational time. Language used for programming. Faster input/output devices. -
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Third Generation
IC used instead of transistors in third generation. Were smaller in size and cheaper as compare to the second. Fast and more reliable. High level language developed. Magnetic core and solid states as main storage. Able to reduce computational time low maintenance cost. Input/Output devices more sophisticated. -
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Fourth Generation
The fourth have microprocessor-based systems. The cheapest of all the generation. The speed, accuracy and reliability of computers were improved in this generation.
Many high-level languages developed in this generation. Further refinement of input/output devices developed. Networking between systems was developed. -
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Fifth Generation
The fifth generation will use super large scale chips. Will have artificial intelligence. Will be able to recognize image and graphs.
This generation aims to be able to solve highly complex problem. Will be able to use more than one CPU for faster processing.This generation are intended to work with natural language. -
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Sixth Generation
This generation could be defined as era of intelligent computers, based on artificial neural networks. They would be computers that use superconductors for its processors, which would allow not to waste electricity into heat due to no resistance, get performance and saving energy.