Who invented vacuum tubes? A) John Bardeen B) William Shockley C) Lee de Forest D) All of above

Who invented vacuum tubes? A) John Bardeen B) William Shockley C) Lee de Forest D) All of above
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When designing vacuum-tube circuits, what characteristics of tubes must be taken into consideration?

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Chief component of first generation computer was a. Transistors b. Vacuum Tubes and Valves c. Integrated Circuits d. None of above

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is Ohms law applicable to vacuum tubes?

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