Could you please help? I have made two different designs and both designs were wrong I would appreciate the help

Also could you please fill out the table down below

Design 1

Design 2

Task A: Plan your design 1. Prepare a plan for a 2-input (plus Cin) Arithmetic Block circuit that meets the following requirements: The Arithmetic Block must implement the following four functions using only existing digital cells in the ECE331 library and your project library), including one and only one) full adder from Exercise 2. Add (Y=A+B), where Cin = 0 Pass A (Y=A), where B and Cin = 0 Subtract (Y=A-B), implemented as Y = A + B' + Cin, where Cin = 1 Increment A (Y=A+1), implemented as Y = A + Cin, where Cin = 1 Notice that Cin determines if the function is Add or Pass (for Cin = 0) or Subtract or Increment (for Cin = 1). The circuit must allow any one of these functions to be selected (via selection input select signals) as the output of the Arithmetic Block. The Arithmetic Block inputs should be named A, B and Cin, and the outputs should be S and Cout. The select signals should be named S0, S1, etc. depending on how many you need, with SO being the lowest (least significant) bit, i.e., Select = 1 in the table below means S.So = 0 1, Select = 2 means SS. = 10, etc. Sketch a diagram of your Arithmetic Block in the indicated box on the worksheet. In order to keep the function selection code the same for all students, please assign function selection according to the table below. (Note: this selection code will become part of the op-code for your 8-bit ALU). full adder inputs Function Select, fa_A fa_B fa_Cin* S,S ADD A+B 0 A B Cin (0) PASSA 1 A 0 SUBT A-B 2 A B' (inv B) Cin (1) INC A 3 A 0 Cin (1) Cin (0) Every operation in the Arithmetic Block should share a single full adder so that the only outputs from this circuit are a single sum bit and a single carry out bit. Thus, to implement multiple functions you will need to manipulate the full adder inputs (specifically the B input to the adder) with selection signals. This can be a bit tricky to do correctly, so to simplify this design step, refer to the table above that shows what each full adder input (here named fa_A, fa_B, fa_Cin) should be, in terms of Arithmetic Block inputs A, B, Cin, for each function. Note that fa_A = A and fa_Cin p. 6 331 = Cin for all functions but fa_B varies with function. Thus, you must add circuitry that will override or manipulate the Arithmetic Block B signal before it is connected to the full adder input fa_B. Step 10: Partial Arithmetic Block function table simulation AB S So Sin 1 0 0 0 0 inputs arithmetic Expected Observed function Cout s Cout S Add A+B Click or Click or Click or Click or tap here tap here tap here tap here to enter to enter to enter to enter text. text. text. text. 1 0 0 1 0 Pass A Click or Click or Click or Click or tap here tap here tap here tap here to enter to enter to enter to enter text. text. text. text. 1 0 1 0 1 Subtract A-B Click or Click or Click or Click or tap here tap here tap here tap here to enter to enter to enter to enter text. text. text. text. 101 1 1 Increment A Click or Click or Click or Click or tap here tap here tap here tap here to enter to enter to enter to enter text. text. text. text. A B Cout Cout S FullAdder B Cin Cin gnd. - 4:|MUX 50 51 cout Cout FullAdder S B Cin Cin 4:1 MUX S0 S1 S S1 and MischHiMousePonunl)