Kod:
unit sistemikapat;
interface
uses
MMsystem,Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;
type
TForm1 = class(TForm)
Edit1: TEdit;
Timer1: TTimer;
Button1: TButton;
Button2: TButton;
Edit2: TEdit...