module Ctr3sr(Clk, Reset, Out);
//
// Counts to 3 with synchronous reset
// At every rising edge the if-statment looks at reset and out, if the 
// term is fulfilled out will set to 0. Otherwise out will be increased by one.
//
//
input Clk;		// Clock: rising edge
input Reset;		// synchronous reset
output [1:0] Out;	// counteroutput

reg [1:0] Out;		// register

	always @ (posedge Clk)
		if (Reset || (Out == 2 ))
			Out = 0;
		else
			Out = Out + 1;
endmodule