The Diagram is being implemented in logic.

1. In the first case A and C are passed through AND gate and B is seperately passed through NOT gate to give the complement.The output of both gates are then added using OR Gate.
2. In Second Case Inputs A,B and C are passed through an AND Gate and Input AB is seperately passed through a NOT gate. Output AB from not gate is given as input to second AND gate along with C.Then the Outputs are Combined using a OR gate
3. In the third case Input A is passed through a NOT gate to obtain complement of A.Along with second input B Complement of Input A is passed through AND Gate to give one component.Then Inputs A and B are passed through a AND gate seperately and both Outputs are combined using a OR gate