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1st Generation Computers
The 1st generation computers used vacuum tubes. A vacuum tube consists of a glass bulb and wire. The wire is used to carry datain the form of electronic signals. The 1st generation computers were very large, expensive and required huge amount of electricity -
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2nd generation computers
The difference between the 1st and 2nd generation computers were that 2nd generations computers used transistors instead of vacuum tubes. Transistors are smaller than vacuum tubes. The computers became