d_ff.v

handshake checker and it is used in the design of USB or other material ,it is a simple one on the a

/*module d_ff;
wire d,clk;
reg q,_q;
always@(posedge clk)
begin
    q<=d;
    _q<=~d;
end
endmodule */




module d_ff(clk,d,q,_q);
input d,clk;

output q,_q;
reg q,_q;
always@(posedge clk)
begin
    q<=d;
    _q<=~d;
end
endmodule