... A= 0 011 , B= 010 0, C_IN= 0, C_OUT= 0, SUM= 011 1 10 A= 0 010 , B= 010 1, C_IN= 0, C_OUT= 0, SUM= 011 1 15 A= 10 01, B =10 01, C_IN= 0, C_OUT= 1, SUM= 0 010 20 A= 10 10, B =11 11, C_IN= 0, C_OUT= 1, SUM= ... select signals is tested. IN0= 1, IN1= 0, IN2= 1, IN3= 0 S1 = 0, S0 = 0, OUTPUT = 1 S1 = 0, S0 = 1, OUTPUT = 0 S1 = 1, S0 = 0, OUTPUT = 1 S1 = 1, S0 = 1, OUTPUT = 0 4-bit Ripple Carry ... n _gate1 (OUT [1] , IN1 [1] , IN2 [1] ); nand n _gate2 (OUT[2], IN1[2], IN2[2]); nand n _gate3 (OUT[3], IN1[3], IN2[3]); nand n _gate4 (OUT[4], IN1[4], IN2[4]); nand n _gate5 (OUT[5], IN1[5], IN2[5]); nand n _gate6 (OUT[6],...