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List of Generations of Computer and Their Year Along with the Type of Memory They have Used

Computer Generation
Memory Type Used
First Generation
Thermionic valves or Vacuum Tube or Electronic valves
Second Generation
Third Generation
Integrated Circuits / Large Scale Integrated circuits
Fourth Generation
Microprocessor, Chip/ Very Large Scale Integrated Circuit

Badan BarmanDr. Badan Barman at present working as an Assistant Professor in the Department of Library and Information Science, Gauhati University, Guwahati-781014, Assam, India. He is the creator of the LIS Links ( - India’s most popular social networking website for Library and Information Science professionals. He also created the Open Access Journals Search Engine (OAJSE) (, UGC NET Guide (, Assam Archive ( and LIS Study ( website.

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