Need Urgently please 30 mins I need all ans please

1 Design a full adder circuit with half adder circuit. Verify your design. Convert the full adder circuit to All NAND gates. 2 Design a combined adder/subtractor circuit and show the output for the corresponding inputs: a. [A]=0101,[B]=0011,ADD=1,SUB=0 b. [A]=0111,[B]=0110,ADD=0,SUB=1 3 Design a four bit up/down asynchronous MOD-12 counter with J-K flip-flops and construct the state transition diagram. 4 Design a four bit odd number up-counter using J-K flip-flops to produce the following binary sequence: 0,1,3,5,7,9,11,13,15, 5 (a) Implement the following function using 4 to 1 multiplexer. Y(A,B,C,D)=(2,3,6,7,8,10,11,13,15) (b) Make a 16 to 1 multiplexer using: I. 2 to 1 multiplexer II. 4 to 1 multiplexer