Can you help me create these circuits with LOGISIM

Multiplexers are not allowed to be used for this lab exercise. Part A: Utilize an Adder IC to demonstrate the addition operation of two 4-bit numbers: a) Assume that the two numbers are unsigned positive numbers b) Assume that the numbers are in 2s complement form. Note that in this case the output is also 4-bit number in 2s complement form, i.e., the carry output will be ignored. Part B: You need to design a circuit that implements the functions in the following table: SO 0 0 1 1 S1 0 1 0 1 Function A + 1 A-B A + B A-1 SO and S1 are 1-bit control inputs to select the function of the circuit. Inputs A and B are 4-bit numbers in 2s complement form. The output is also a 4-bit number in 2s complement form. You are allowed to use only one 4-bit adder to implement all the functions. But any number of other components (except the adder) can be used. HINT: Design a combinational logic circuit to modify the input B and the carry input of the adder depending on the control inputs SO and S1. Important: Lab grade will depend on the working of the circuit & will be checked of by your lab instructor. Multiplexers are not allowed to be used for this lab exercise. Part A: Utilize an Adder IC to demonstrate the addition operation of two 4-bit numbers: a) Assume that the two numbers are unsigned positive numbers b) Assume that the numbers are in 2s complement form. Note that in this case the output is also 4-bit number in 2s complement form, i.e., the carry output will be ignored. Part B: You need to design a circuit that implements the functions in the following table: SO 0 0 1 1 S1 0 1 0 1 Function A + 1 A-B A + B A-1 SO and S1 are 1-bit control inputs to select the function of the circuit. Inputs A and B are 4-bit numbers in 2s complement form. The output is also a 4-bit number in 2s complement form. You are allowed to use only one 4-bit adder to implement all the functions. But any number of other components (except the adder) can be used. HINT: Design a combinational logic circuit to modify the input B and the carry input of the adder depending on the control inputs SO and S1. Important: Lab grade will depend on the working of the circuit & will be checked of by your lab instructor