A=3 B=5 C=7 D=4 E=6

a=1 b=1 c=1 d=0 e=0

Output 3. a) Design a combinational circuit which takes two 4bit binary S1 So numbers A and B as inputs and produces output based on 00 the switch inputs si so according to the following table: 01 You can use only a single 4bit binary adder and some other components. (You can assume you have 4bit gates 10 and 4bit multiplexers if needed). 11 A A+B A + 1's com. of B 2's com. of B b) 3 bit synchronous Binary up counter circuit with T flip-flops is known. Modify it by using 2x1 Multiplexers so that when switch input is o it counts up, if switch input is 1 all T flip- flops preserve state