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Gold vault has 3 locks with a key for each lock. Key A is owned by the manager whilst Key B and C are in the custody of the senior bank teller and the trainee bank teller respectively. In order to open the vault door at least two people must insert their keys into the assigned locks at the same time. The trainee bank teller can only open the vault when the bank manager is present in the opening. Determine the truth table for such a digital locking system

Derive and minimize the canonical SOP expression for the digital locking system

Draw the logic circuit for the minimized system (ii) above electronic

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