Create a circuit that has two 2-bit inputs A[1:0] and B[1:0], and produces an output z. The value of z should be 1 if A = B, otherwise z should be 0.

module top_module ( input [1:0] A, input [1:0] B, output z ); 
    assign z=(A==B);
endmodule

能用C的基础，真好