3. Implement a BCD to seven segment decoder for a common anode seven segment display. (It means that sending a 0 to a particular segment turns on and sending a 1 turns off the corresponding LED segment of the seven segment display). Use the variables A,B,C,D for the BCD inputs with 'A' as MSB. Use only 2-4 decoders and OR gates to implement the code converter. Don't use any other gates and/or components