3- Implementing a 4-bit incrementer using 4 FA's Draw using EWB a 4-bit incrementer circuit.

4. The following figure shows the four-bit Adder-Subtractor. Your inputs for this combinational circuit are A = 5, B = 6 and M = 1. What is the outputs S3, S2, S1, and S0? You have to show how to get the outputs by indicating each carry bit. (Note: You should show all the steps to receive full credits)

Design a 2-bit comparator. The comparator input has two 2-bit numbers A and B. A consists of 2 bits a1 and a0. B consists of 2 bits b1 and b0. The comparator has three outputs Z2, Z1, Z0. a. Show the truth table for this comparator. b. Write the logic equation for Z2 that are true if only if A < B c. Write the logic equation for Z1 that are true if only if A > B d. Write the logic equation for Z0 that are true if only if A = B e. Show the logic design for this comparator using the minimum number of AND, OR, and Inverters. f. Verify your design using Logisim.

Design a 16 bit adder/subtractor with 2 data inputs (B15 to B0 and A15 to A0), a SEL input (1 if add and 0 if subtract), and a result output (R15 to R0).You can design the circuit in MultiSim, VHDL, or LabVIEW. PLEAE USE MULTISIM