Design a 4-bit ALU that performs Arithmetic (add, subtraction), and Logic operations (AND, OR). The following control signals are to be considered: (Please explain your work) A/S: add/subtract (0:add, 1:subtract)

Simulate your design with logism

The details of each control signal (Unit) are as follows. Unit 1 (A/S) - Design a 4-bit adder/subtractor that accepts two 4-bits numbers, A and B, and either add them up (A + B) or subtract them (A B) depending on a control signal A/S (when the control signal is 0 perform ADD, otherwise if the signal is 1 then perform SUB). The result will be stored in C.