9. XOR Gate Using Basic Gates

How do you plan to solve it?

// ============================================================
// Basic Gates (given)
// ============================================================
module and_gate(input a, b, output y);
    assign y = a & b;
endmodule

module or_gate(input a, b, output y);
    // write code here for or gate
    assign y = a | b;
endmodule

module not_gate(input a, output y);
    // write code here for not gate
    assign y = ~a;
endmodule

// ============================================================
// XOR Gate
// ============================================================
module xor_gate (
    input  a, b,
    output y
);
    wire not_a;
    wire not_b;
    wire and_output1;
    wire and_output2;
    
    not_gate not_gate1(a, not_a);
    not_gate not_gate2(b, not_b);

    and_gate and_gate1(a, not_b, and_output1);
    and_gate and_gate2(not_a, b, and_output2);
    or_gate or_gate1(and_output1, and_output2, y);
endmodule