# Digital Logic, Boolean Algebra

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Write Boolean expression & draw the gate logic diagram & typical PLC logic ladder diagram for a control system wherein a fan is to run only when all of the following conditions are met:

- Input A is OFF

- Input B is ON or input C is ON, or both B and C are ON

- Inputs D and E are both ON

- One or more of inputs F, G, or H are ON

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Write Boolean expression & draw the gate logic diagram & typical PLC logic ladder diagram

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