There are totally five computer generations known till date. Each generation has been discussed in detail along with their time period and characteristics. Here approximate dates against each generations have been mentioned which are normally accepted.
Following are the main five generations of computers
| S.N. | Generation & Description |
|---|---|
| 1 | First Generation The period of first generation: 1946-1959. Vacuum tube based. |
| 2 | Second Generation The period of second generation: 1959-1965. Transistor based. |
| 3 | Third Generation The period of third generation: 1965-1971. Integrated Circuit based. |
| 4 | Fourth Generation The period of fourth generation: 1971-1980. VLSI microprocessor based. |
| 5 | Fifth Generation The period of fifth generation: 1980-onwards. ULSI microprocessor based |
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