We have twee shift registers R1, 22, 23, that we want to sum the values they contain a lot (r. e-R1+22+ (3) we dont have any other registers but we have two full adders and one D-type flip-flop. Design the circuit which replerens the resister transfer R12 R4R2+R3 by shifting the bits one by one each clock cycle. Use the FF to store the corry value from previous digst. 206el your pins properly