Explanation
The main electronic component used in first-generation counterparts was Vacuum Tubes and Valves
Leo is called the first-generation computer
First-generation (1940 - 1956) vacuum tubes as a major piece of technology.
The ENIAC is an example of 1st generation computer.
The time span of first-generation electronic computers was 1943 to 1959
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Second generation (1956 - 1963) use of transistors.
Third generation (1964 - 1971) use of Integrated circuits.
Fourth generation (1972 - 2010) use of the microprocessor
The fifth generation (2010 to present) use Artificial intelligence
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ND7-5-2023