1. The document contains code for three forms - one for number conversion between binary, decimal, octal and hexadecimal, one for temperature conversion, and one for calculating area. 2. The number conversion form contains functions to convert between the different number systems. 3. The temperature conversion form contains an option-driven routine to convert between Celsius, Fahrenheit and Kelvin scales. 4. The area calculation form contains buttons to calculate the area of triangles, circles, squares and rectangles by calling the appropriate formulas.

1. 1. Form Konversi Bilangan ‘Biner,Desima,Oktal,Hexadesimal’
OptionExplicit
Private SubCommand2_Click()
Text1.Text= ""
Text2.Text= ""
End Sub
Private SubCommand3_Click()
End
End Sub
Private SubCommand1_Click()
If Option2.ValueAndOption5.Value ThenText2.Text=BinToDes(Text1.Text)
If Option2.ValueAndOption6.Value ThenText2.Text=Text1.Text
If Option2.ValueAndOption7.Value ThenText2.Text=BinToOk(Text1.Text)
If Option2.ValueAndOption8.Value ThenText2.Text=BinToHex(Text1.Text)
If Option1.ValueAndOption6.Value ThenText2.Text=DesToBin(Text1.Text)
If Option1.ValueAndOption5.Value ThenText2.Text=Text1.Text
If Option1.ValueAndOption7.Value ThenText2.Text=DesToOk(Text1.Text)
If Option1.ValueAndOption8.Value ThenText2.Text=DesToHex(Text1.Text)
If Option3.ValueAndOption6.Value ThenText2.Text=OkToBin(Text1.Text)
If Option3.ValueAndOption8.Value ThenText2.Text=OkToHex(Text1.Text)
If Option3.ValueAndOption5.Value ThenText2.Text=OkToDes(Text1.Text)
If Option3.ValueAndOption7.Value ThenText2.Text=Text1.Text

2. If Option4.ValueAndOption6.Value ThenText2.Text=HexToBin(Text1.Text)
If Option4.ValueAndOption5.Value ThenText2.Text=HexToDes(Text1.Text)
If Option4.ValueAndOption7.Value ThenText2.Text=HexToOk(Text1.Text)
If Option4.ValueAndOption8.Value ThenText2.Text=Text1.Text
WithText1
.SelStart= 0
.SelLength=Len(Text1.Text)
End With
End Sub
PublicFunction BinToDes(ByVal NBinerAsString) AsLong
DimA As Integer
DimB AsLong
DimNilai AsLong
OnError GoTo ErrorHandler
B = 1
For A = Len(NBiner) To1 Step -1
If Mid(NBiner,A,1) = "1" ThenNilai =Nilai + B
B = B * 2
Next
BinToDes= Nilai
ExitFunction
ErrorHandler:
BinToDes= 0
End Function
PublicFunctionDesToBin(ByVal NDesimal AsLong) AsString
DimC As Byte
DimD AsLong
DimNilai AsString
OnError GoTo ErrorHandler
D = (2 ^ 31) - 1
While D> 0
If NDesimal - D>= 0 Then
NDesimal =NDesimal - D
Nilai =Nilai & "1"
Else
If Val(Nilai) >0 Then Nilai =Nilai &"0"
End If
D = D / 2
Wend
DesToBin= Nilai
ExitFunction

3. ErrorHandler:
DesToBin= 0
End Function
PublicFunctionDesToHex(ByVal NDesimal AsLong) AsString
DesToHex =Hex(NDesimal)
End Function
PublicFunctionHexToDes(ByVal NHexaAsString) AsLong
DimE As Integer
DimNilai As Long
DimF As Long
DimCharNilai AsByte
OnError GoTo ErrorHandler
For E = Len(NHexa)To1 Step -1
SelectCase Mid(NHexa,E,1)
Case "0" To "9": CharNilai = CInt(Mid(NHexa,E,1))
Case Else:CharNilai =Asc(Mid(NHexa,E,1)) - 55
End Select
Nilai = Nilai +((16 ^ F) * CharNilai)
F = F + 1
NextE
HexToDes=Nilai
ExitFunction
ErrorHandler:
HexToDes=0
End Function
PublicFunctionDesToOk(ByVal NDesimalAsLong) AsString
DesToOk= Oct(NDesimal)
End Function
PublicFunction OkToDes(ByVal NOktal AsString) AsLong
DimG AsInteger
DimH As Long
DimNilai AsLong
OnError GoTo ErrorHandler
For G = Len(NOktal)To1 Step -1
Nilai = Nilai +(8 ^ H) * CInt(Mid(NOktal,G,1))
H = H + 1
NextG
OkToDes= Nilai
ExitFunction
ErrorHandler:
OkToDes= 0
End Function

4. PublicFunctionBinToOk(ByVal binAsLong) AsString
BinToOk= DesToOk(BinToDes(bin))
End Function
PublicFunctionBinToHex(ByVal NBinerAsLong) AsString
BinToHex = DesToHex(BinToDes(NBiner))
End Function
PublicFunctionOkToBin(ByVal NOktal AsDouble) AsString
OkToBin= DesToBin(OkToDes(NOktal))
End Function
PublicFunctionOkToHex(ByVal NOktalAsDouble) AsString
OkToHex = DesToHex(OkToDes(NOktal))
End Function
PublicFunctionHexToBin(ByVal NHexaAsString) AsString
HexToBin= DesToBin(HexToDes(NHexa))
End Function
'
PublicFunctionHexToOk(ByVal NHexaAsString) AsDouble
HexToOk= DesToOk(HexToDes(NHexa))
End Function
Private Sub Form_Load()
Move (Screen.Width - Me.Width) /2,(Screen.Height - Me.Height) /2
Text1.Text=""
Text2.Text=""
End Sub
2. Form Konversi Suhu
Private Subrumus()
If Option1.Value =True And Option4.Value =True Then
Text1.Text=Text2.Text
ElseIf Option1.Value =True AndOption5.Value=True Then
Text2.Text=Val(Text1.Text) *4 / 5
ElseIf Option1.Value =True AndOption6.Value=True Then
Text2.Text=(Val(Text1.Text) *9 / 5) + 32
End If
If Option2.Value =True And Option5.Value =True Then
Text1.Text=Text2.Text
ElseIf Option2.Value =True AndOption4.Value=True Then
Text2.Text=Val(Text1.Text) *5 / 4
ElseIf Option2.Value =True AndOption6.Value=True Then

5. Text2.Text=(9 / 4 * Val(Text1.Text)) +32
End If
If Option3.Value =True And Option6.Value =True Then
Text1.Text=Text2.Text
ElseIf Option3.Value =True AndOption5.Value=True Then
Text2.Text=5 / 9 * (Val(Text1.Text) - 32)
ElseIf Option3.Value =True AndOption4.Value=True Then
Text2.Text=4 / 9 * (Val(Text1.Text) - 32)
End If
End Sub
Private SubCommand1_Click()
End
End Sub
Private SubOption1_Click()
Call rumus
End Sub
Private SubOption2_Click()
Call rumus
End Sub
Private SubOption3_Click()
Call rumus
End Sub
Private SubOption4_Click()
Call rumus
End Sub
Private SubOption5_Click()
Call rumus
End Sub
Private SubOption6_Click()
Call rumus
End Sub
Private Sub Text1_Change()
Call rumus
End Sub

6. 3. Form Menghitung Luas
Private SubCommand1_Click()
Dim luasAsDouble
luas= Val(Text1.Text) *Val(Text2.Text) /2 ' Luas Segitiga
Text3.Text= luas
End Sub
Private SubCommand2_Click()
Text1.Text= “”
Text2.Text= “”
Text3.Text= “”
End Sub
Private SubCommand3_Click()
Dim phi,luasAsDouble ' Luas Lingkaran
phi = 22 / 7
luas= phi * (Text4.Text*Text4.Text)
Text5.Text= luas
End Sub
Private Sub Command4_Click()
Text4.Text= “”
Text5.Text= “”
End Sub
Private SubCommand5_Click()
Text8.Text= Val(Text6.Text)*2 ' Luas Persegi
End Sub
Private SubCommand6_Click()
Text8.Text= “”
Text6.Text= “”
End Sub
Private SubCommand7_Click()
Text10.Text= Val(Text7.Text) *Val(Text9.Text) 'Luas Persegi Panjang
End Sub
Private SubCommand8_Click()
Text10.Text= “”
Text7.Text= “”
Text9.Text= “”
End Sub