How do you plan to solve it?
module bitwise_ops_demo(A,B,AND_OUT,OR_OUT,XOR_OUT,XNOR_OUT); input [3:0] A,B; output [3:0] AND_OUT,OR_OUT,XOR_OUT,XNOR_OUT; assign AND_OUT=A&B; assign OR_OUT=A|B; assign XOR_OUT=A^B; assign XNOR_OUT=~(A^B); endmodule