//2024-2-11 姜青羊
//日常练习

/*module inverter (
                        A,
                        Y
                    );

input                   A;
output                  Y;

assign                  Y=~A;

endmodule*/

module counter (
                            clk,
                            res,
                            y
                        );

input                       clk,res;
output                      y;

    
endmodule