Using only And, Or, XOR and their negative counterpart gates.

1. Design a 4-bit ALU that performs Arithmetic (add, subtraction), and Logic operations (AND, OR). The following control signals are to be considered: .A/S: add/subtract (0:add, 1:subtract) .A/O: and/or (O:and, 1:or) A/L: arithmetic/Logic (0:arithmetic, 1:logic) RW: read/write signal (0:read, 1:write) 2. Simulate your design