Question: The figure uses a 4-bit adder IC and the necessary corrective circuitry to perform the BCD addition. You are to improve this design by adding

The figure uses a 4-bit adder IC and the necessary corrective circuitry to perform the BCD addition. You are to improve this design by adding additional adder ICs and combinational circuitry in order to have a range 0-30

Fig. 3.32 Block diagram of BCD adder

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