module bitwise_ops_demo (
input [3:0] A,
input [3:0] B,
output [3:0] AND_OUT,
output [3:0] OR_OUT,
output [3:0] XOR_OUT,
output [3:0] XNOR_OUT
);
assign AND_OUT = A & B;
assign OR_OUT = A | B;
assign XOR_OUT = A ^ B;
assign XNOR_OUT = ~(A ^ B);
endmodule