First Generation of Computer : Vacuum-tube Computer

            A vacuum-tube based computer now termed as the First generation of computer, is a computer that uses Vacuum-tube, for logic circuitry. Vacuum-tube computers, continued to be build into the 1960s. Vacuum-tube technology requires a great deal of electricity. The ENIAC  computer(1946) had over 17,000. In operation ENIAC consumed 150 kilowatts of power, of which 80 kilowatts were used to for heating tubes, 45 kilowatts of DC power supply, 20 kilowatts of ventilation blowers and 5 kilowatts for Punched-card. READ MORE

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