Computer Generations (पीढ़ियाँ )

पीढ़ियाँ (Computer Generations)

1. First Generation (The period of first generation is 1946 - 1959 Vacuum tube based) 
   
2. Second Generation (The period of second generation is 1959 - 1965 Transistor based) 
   
3. Third Generation (The period of third generation is 1965 - 1971 Integrated Circuit based) 
   
4. Fourth Generation (The period of fourth generation is 1971 - 1980 VLSI microprocessor based) 
   
5. Fifth Generation (The period of fifth generation is 1980 - onwards ULSI microprocessor based)