CARA MEMBUAT APLIKASI KALKULATOR DENGAND DELPHI 7
BUAT FORM SEPERI DI BAWAH INI
CREATED BY A.Z.I.Z._T.E.K.N.I.K.I.N.F.O.R.M.A.T.I.K.A.
GB.1 A.Z.I.Z.
T.E.K.N.I.K.I.N.F.O.R.M.T.I.K.A.
MASUKAN SOURCE KODE DI BAWAH INI.
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
ButtonMr: TButton;
ButtonSin: TButton;
Button7: TButton;
Button4: TButton;
Button1: TButton;
Button0: TButton;
ButtonPoint: TButton;
ButtonNot: TButton;
ButtonResult: TButton;
Button2: TButton;
ButtonM: TButton;
ButtonCos: TButton;
Button8: TButton;
Button5: TButton;
ButtonPhi: TButton;
ButtonTan: TButton;
Button9: TButton;
Button6: TButton;
Button3: TButton;
ButtonPlus: TButton;
ButtonFak: TButton;
ButtonLn: TButton;
ButtonKuadrat: TButton;
ButtonKali: TButton;
ButtonOff: TButton;
ButtonLog: TButton;
ButtonAkar: TButton;
ButtonPangkat: TButton;
ButtonDiv: TButton;
ButtonOn: TButton;
ButtonPer: TButton;
ButtonMod: TButton;
ButtonMin: TButton;
ButtonBagi: TButton;
RbDEG: TRadioButton;
RbRAD: TRadioButton;
RbGRADS: TRadioButton;
Memo1: TMemo;
procedure FormCreate(Sender: TObject);
procedure ButtonOnClick(Sender: TObject);
procedure ButtonOffClick(Sender: TObject);
procedure Button0Click(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Button5Click(Sender: TObject);
procedure Button6Click(Sender: TObject);
procedure Button7Click(Sender: TObject);
procedure Button8Click(Sender: TObject);
procedure Button9Click(Sender: TObject);
procedure ButtonPlusClick(Sender: TObject);
procedure ButtonMinClick(Sender: TObject);
procedure ButtonKaliClick(Sender: TObject);
procedure ButtonBagiClick(Sender: TObject);
procedure ButtonModClick(Sender: TObject);
procedure ButtonDivClick(Sender: TObject);
procedure ButtonResultClick(Sender: TObject);
procedure ButtonKuadratClick(Sender: TObject);
procedure ButtonPointClick(Sender: TObject);
procedure ButtonNotClick(Sender: TObject);
procedure ButtonAkarClick(Sender: TObject);
procedure ButtonPangkatClick(Sender: TObject);
procedure ButtonLnClick(Sender: TObject);
procedure ButtonLogClick(Sender: TObject);
procedure ButtonPerClick(Sender: TObject);
procedure ButtonFakClick(Sender: TObject);
procedure ButtonPhiClick(Sender: TObject);
procedure ButtonSinClick(Sender: TObject);
procedure ButtonCosClick(Sender: TObject);
procedure ButtonTanClick(Sender: TObject);
procedure ButtonMClick(Sender: TObject);
procedure ButtonMrClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
MemAngka,MemLogic,MemOperator,MemSimpan:string;
implementation
uses math;
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
memo1.Clear;{mengosongkan caption / lines dari memo1}
{menonaktifkan ketiga radiobutton}
RbDEG.Enabled:=false;
RbRAD.Enabled:=false;
RbGRADS.Enabled:=false;
end;
procedure TForm1.ButtonOnClick(Sender: TObject);
begin
{setting ketika tombol on ditekan}
Memo1.Text:=’0′;
{membuat layar kalkulator berisi angka 0}
MemLogic:=’0′;
{merubah nilai variable MemLogic menjadi 0}
MemOperator :=”;
{mengosongkan nilai variable MemOperator}
MemAngka :=’0′;
{merubah nilai variable MemAngka menjadi 0}
{mengaktifkan kembali ketiga radiobutton}
RbDEG.Enabled:=true;
RbRAD.Enabled:=true;
RbGRADS.Enabled:=true;
RbDEG.Checked:=true; {mengecek radiobutton RbDeg}
end;
procedure TForm1.ButtonOffClick(Sender: TObject);
begin
memo1.clear; {mengosongkan tampilan layar calculator}
MemLogic:=”;
MemSimpan :=’0′;
{menonaktifkan ketiga radiobutton}
RbDEG.Checked :=false;
RbRAD.Checked :=false;
RbGRADS.Checked:=false;
end;
procedure TForm1.Button0Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
if MemOperator<>” then memo1.Text:=’0′ else
if memo1.text=’0′ then memo1.text:=’0′ else
begin
memo1.Text:=memo1.Text+’0′;
MemLogic:=’1′;
end;
end
else
memo1.Text:=memo1.Text+’0′;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’1′ else
memo1.text:=’1′;
end
else
memo1.Text:=memo1.Text+’1′;
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’2′ else
memo1.text:=’2′;
end
else
memo1.Text:=memo1.Text+’2′;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’3′ else
memo1.text:=’3′;
end
else
memo1.Text:=memo1.Text+’3′;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’4′ else
memo1.text:=’4′;
end
else
memo1.Text:=memo1.Text+’4′;
end;
procedure TForm1.Button5Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’5′ else
memo1.text:=’5′;
end
else
memo1.Text:=memo1.Text+’5′;
end;
procedure TForm1.Button6Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’6′ else
memo1.text:=’6′ ;
end
else
memo1.Text:=memo1.Text+’6′;
end;
procedure TForm1.Button7Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’7′ else
memo1.text:=’7′ ;
end
else
memo1.Text:=memo1.Text+’7′;
end;
procedure TForm1.Button8Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’8′ else
memo1.text:=’8′;
end
else
memo1.Text:=memo1.Text+’8′;
end;
procedure TForm1.Button9Click(Sender: TObject);
begin
if memo1.text<>” then
if MemLogic=’0′ then
begin
MemLogic:=’1′;
if MemOperator<>” then memo1.Text:=’9′ else
memo1.text:=’9′;
end
else
memo1.Text:=memo1.Text+’9′;
end;
procedure TForm1.ButtonPlusClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’+’ else
if (MemOperator=”) then
begin
MemOperator:=’+’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’+’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonMinClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’-‘ else
if (MemOperator=”) then
begin
MemOperator:=’-‘;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’-‘;
MemLogic:=’0’;
end;
end;
procedure TForm1.ButtonKaliClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’x’ else
if (MemOperator=”) then
begin
MemOperator:=’x’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’x’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonBagiClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’/’ else
if (MemOperator=”) then
begin
MemOperator:=’/’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’/’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonModClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’mod’ else
if (MemOperator=”) then
begin
MemOperator:=’mod’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’mod’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonDivClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’div’ else
if (MemOperator=”) then
begin
MemOperator:=’div’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’div’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonResultClick(Sender: TObject);
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemLogic:=’0′;
end;
procedure TForm1.ButtonKuadratClick(Sender: TObject);
begin
if memo1.text<>” then
memo1.Text:=floattostr(sqr(strtofloat(memo1.Text)));
end;
procedure TForm1.ButtonPointClick(Sender: TObject);
begin
if memo1.text<>” then
memo1.Text:=memo1.Text + ‘.’;
end;
procedure TForm1.ButtonNotClick(Sender: TObject);
begin
if memo1.text<>” then
memo1.Text:=floattostr(strtofloat(memo1.Text)*(-1));
end;
procedure TForm1.ButtonAkarClick(Sender: TObject);
begin
if memo1.text<>” then
memo1.Text:=floattostr(sqrt(strtofloat(memo1.Text)));
end;
procedure TForm1.ButtonPangkatClick(Sender: TObject);
begin
if (memo1.text<>”) then
if MemLogic=’0′ then MemOperator:=’^’ else
if (MemOperator=”) then
begin
MemOperator:=’^’;
MemLogic:=’0′;
MemAngka:=memo1.Text;
end
else
begin
if MemOperator=’+’ then memo1.Text:=floattostr(strtofloat(MemAngka)+strtofloat(memo1.Text));
if MemOperator=’-‘ then memo1.Text:=floattostr(strtofloat(MemAngka)-strtofloat(memo1.Text));
if MemOperator=’x’ then memo1.Text:=floattostr(strtofloat(MemAngka)*strtofloat(memo1.Text));
if MemOperator=’/’ then memo1.Text:=floattostr(strtofloat(MemAngka)/strtofloat(memo1.Text));
if MemOperator=’mod’ then memo1.Text:=inttostr(strtoint(MemAngka) mod strtoint(memo1.Text));
if MemOperator=’div’ then memo1.Text:=inttostr(strtoint(MemAngka)div strtoint(memo1.Text));
if MemOperator=’^’ then memo1.Text:=floattostr(exp(strtofloat(memo1.Text)*ln(strtofloat(MemAngka))));
MemAngka:=memo1.Text;
MemOperator:=’^’;
MemLogic:=’0′;
end;
end;
procedure TForm1.ButtonLnClick(Sender: TObject);
begin
if (memo1.text<>”) then
memo1.Text := floattostr(ln(strtofloat(memo1.Text)));
end;
procedure TForm1.ButtonLogClick(Sender: TObject);
begin
if memo1.Text<=inttostr(0) then memo1.Text :=’Error’
else
if (memo1.text<>”) then
memo1.Text := floattostr(log10(strtofloat(memo1.Text)));
end;
procedure TForm1.ButtonPerClick(Sender: TObject);
begin
if memo1.Text = ‘0’ then memo1.Text:=’Error divide zero’ else
if memo1.Text<>” then memo1.Text :=floattostr(1/strtofloat(memo1.Text));
MemLogic :=’0′;
end;
procedure TForm1.ButtonFakClick(Sender: TObject);
var i,n,fak:integer;
begin
if memo1.Text<>” then
begin
n :=strtoint(memo1.Text);
fak:=1;
for i:=1 to n-1 do
fak:=fak*n;
memo1.Text:=inttostr(fak);
MemLogic :=’0′;
end;
end;
procedure TForm1.ButtonPhiClick(Sender: TObject);
begin
if memo1.Text<>” then memo1.Text := floattostr(pi);
end;
procedure TForm1.ButtonSinClick(Sender: TObject);
var sudut:real;
begin
if memo1.Text<>” then
begin
sudut:=strtofloat(memo1.Text);
if RbDeg.Checked = true then sudut:=sudut*pi/180 else
if RbRad.Checked = true then sudut:=sudut else
if RbGrads.Checked = true then sudut:=sudut*pi/200;
memo1.Text := floattostr(sin(sudut));
MemLogic :=’0′;
end;
end;
procedure TForm1.ButtonCosClick(Sender: TObject);
var sudut:real;
begin
if memo1.Text<>” then
begin
sudut:=strtofloat(memo1.Text);
if RbDeg.Checked = true then sudut:=sudut*pi/180 else
if RbRad.Checked = true then sudut:=sudut else
if RbGrads.Checked = true then sudut:=sudut*pi/200;
memo1.Text := floattostr(cos(sudut));
MemLogic :=’0′;
end;
end;
procedure TForm1.ButtonTanClick(Sender: TObject);
var sudut:real;
begin
if memo1.Text<>” then
begin
sudut:=strtofloat(memo1.Text);
if RbDeg.Checked = true then sudut:=sudut*pi/180 else
if RbRad.Checked = true then sudut:=sudut else
if RbGrads.Checked = true then sudut:=sudut*pi/200;
memo1.Text := floattostr(tan(sudut));
MemLogic :=’0′;
end;
end;
procedure TForm1.ButtonMClick(Sender: TObject);
begin
MemSimpan := memo1.Text ;
MemLogic := ‘0’;
MemOperator :=”;
MemAngka := ‘0’;
end;
procedure TForm1.ButtonMrClick(Sender: TObject);
begin
memo1.Text := MemSimpan ;
end;
end.
TAMPILAN PROGRAM SELURUHNYA
GB.2 A.Z.I.Z.
T.E.K.N.I.K.I.N.F.O.R.M.T.I.K.A.
APABILA Tombol tidak bias di eksekusi tekan tombol On
Selamat mencoba
Basic Programing 
thanks ea.
wah.. sangat membantu sekali..terutama untuk saya sendiri
sangat menambah wawasan saya dalam hal kalkulator.
saya juga mau berbagi pengalaman membuat calculator persamaan linear 3 variabel dengan delphi..
http://itsystemid.blogspot.com/2015/01/cara-mengarang-code-program-aplikasi.html
makasih gan sangat bermanfaat
Nice share ! 🙂
Salam Delphier
bgus sih…
p knp trlalu pnjang codingnya…
bs g codingnya jngn trlalu pnjng..?
GAN ADA NGGAK APLIKASI YG SDH JADI….
boz mau tanya donk,
program delphi ane udh dbikin setupnya pke inno setup,
trus ane instal hsl setupnya dkomp yg g ad delphiNy,
ko g bisa dRUN yya,
tolong pencerahan donk
salam bozz aku pemula delpi
good job…. please visit my blog too,,,
kalau bisa saling follow gan…
susah bangetttttttttt………..tp kl ada kemauan psti bs laaaa…..
susah banget yah..????tp aku mau bngat blajr…….apa c yg ngak bs kl kita ada kmauan……
Kwmauan Kamu Bikinlah Jadwal belajar sehari2
rumit banget yah……tp apa bisa aku blajar????
U Pasti Bisa Semnagat
nice tutorial gan…. yang lain lagi dong… kwakwakwka
ya mau u apaan???
Maunya Tutorial apa…???
makasihh gann, hidupp pemrograman ;DD
salam kenal,….saya pemula Delhpi 7.0,…
saya mau mth,…tip dan trik belajar delphi 7,……
dan contoh2, program dari Delphi7,….Thx
. gmana sich buatnya. ? ,
. pusing da. ,,,,,,,,
😦
gampang ko..tiggal di ambil aja source code nya…:)
Salam hormat, ada aplikasi chatting komputer untuk 2 arah, seperti sms, dapat di download di http://www.ciauldownload.blogspot.com, Gratis, Terima kasih
tolong donk sekalian dikasih in video na kalo cuma text na aja kurang paham nech