main.pas

51单片机常用工具包.rar

unit main;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    BitBtn1: TBitBtn;
    Edit2: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
    procedure FormActivate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
    function HexToInt(SourceStr: string): integer;
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  str1 , str2 : string;
  i,iLen, sum : integer;
begin
  str1:= Memo1.Text;
  iLen:= Length(str1);
  if (iLen = 0) then
  begin
    showMessage('输入错误，请检查！');
    exit;
  end;
  for i := 1 to (iLen+1) div 3 do
  begin
    str2 := copy(str1,i*3-2,2);
    sum := sum + HexToInt(str2);
  end;
  sum:=sum mod 65536;
  Edit2.Text:=IntToHex(sum,0);
end;

procedure TForm1.FormActivate(Sender: TObject);
begin
  Memo1.Text:='';
end;

function TForm1.HexToInt(SourceStr: string): integer;
var
  str:string;
  num:integer;
begin
  str:='$'+Sourcestr;
  num:=strToInt(str);
  Result:=num;
end;

end.