[marcoszorrilla]

Te añado un pequeño ejemplo que acabo de probar:

Código Delphi [-]
unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Edit4: TEdit;
    Edit5: TEdit;
    Edit6: TEdit;
    Memo1: TMemo;
    Memo2: TMemo;
    Button1: TButton;
    procedure Edit1Change(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Edit1Change(Sender: TObject);
var
i:Integer;
begin
For i:=1 to form1.ComponentCount -1 do
begin
 if Components[i].ClassType = Tedit then
 begin
  (Components[i] As Tedit).text:=Edit1.Text;
 end;
end;

end;

end.

Un Saludo.