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[3:0]= A [3:0] & B[3:0];
assign OR_OUT[3:0] = A[3:0] | B[3:0];
assign XOR_OUT[3:0]= A[3:0] ^ B[3:0];
assign XNOR_OUT[3:0]= ~(A[3:0]^B[3:0]);
endmodule