Question

logic diagram for 4-bit ripple carry adder​

Answer 1

Answer:

A Circuit diagram of a 4-bit ripple carries adder is shown below. Sum out S0 and carry out Cout of the Full Adder 1 is valid only after the propagation delay of Full Adder 1. In the same way, Sum out S3 of the Full Adder 4 is valid only after the joint propagation delays of Full Adder 1 to Full Adder 4.