Создание приложения

unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    Button2: TButton;
    Edit3: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
 
function ByteToBinStr(a_bByte: byte): string;
var
i: integer;
begin
SetLength(Result, 8);
for i := 8 downto 1 do
begin
   Result[i] := chr($30 + (a_bByte and 1));
   a_bByte := a_bByte shr 1;
end;
end;
 
function BinStrToByte(a_sBinStr: string): byte;
var
i: integer;
begin
Result := 0;
for i := 1 to length(a_sBinStr) do
   Result := (Result shl 1) or byte(a_sBinStr[i] = '1');
end;
 
procedure TForm1.Button1Click(Sender: TObject);
var
s1: string;
i: integer;
begin
 Edit2.Text:='';
 s1:=Edit1.Text;
 for i:=1 to Length(s1) do
  Edit2.Text:=Edit2.Text+ByteToBinStr(Ord(s1[i]));
end;
 
procedure TForm1.Button2Click(Sender: TObject);
var
s1: string;
begin
 Edit3.Text:='';
 s1:=Edit2.Text;
 while Length(s1)<>0 do begin
  Edit3.Text:=Edit3.Text+Chr(BinStrToByte(Copy(s1, 1, 8)));
  Delete(s1, 1, 8);
 end;
end;
end.