振荡信号的初值计算器.frm

用单片机产生一个振荡信号时

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "振荡信号的初值计算器（频率）"
   ClientHeight    =   3180
   ClientLeft      =   60
   ClientTop       =   450
   ClientWidth     =   4680
   ForeColor       =   &H00FF0000&
   LinkTopic       =   "Form1"
   ScaleHeight     =   3180
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command3 
      Caption         =   "退出"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3840
      TabIndex        =   10
      Top             =   2520
      Width           =   735
   End
   Begin VB.CommandButton Command2 
      Caption         =   "计算（十六进制）"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   2040
      TabIndex        =   9
      Top             =   2520
      Width           =   1575
   End
   Begin VB.CommandButton Command1 
      BackColor       =   &H8000000D&
      Caption         =   "计算（十进制）"
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   9
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   360
      MaskColor       =   &H00FF0000&
      TabIndex        =   8
      Top             =   2520
      Width           =   1455
   End
   Begin VB.TextBox Text4 
      BorderStyle     =   0  'None
      ForeColor       =   &H000000FF&
      Height          =   375
      Left            =   2640
      TabIndex        =   7
      Top             =   1920
      Width           =   1335
   End
   Begin VB.TextBox Text3 
      BorderStyle     =   0  'None
      ForeColor       =   &H000000FF&
      Height          =   270
      Left            =   2640
      TabIndex        =   5
      Top             =   1320
      Width           =   1335
   End
   Begin VB.TextBox Text2 
      BorderStyle     =   0  'None
      ForeColor       =   &H000000FF&
      Height          =   270
      Left            =   2640
      TabIndex        =   4
      Top             =   720
      Width           =   1335
   End
   Begin VB.TextBox Text1 
      BorderStyle     =   0  'None
      ForeColor       =   &H000000FF&
      Height          =   270
      Left            =   2640
      TabIndex        =   1
      Top             =   120
      Width           =   1335
   End
   Begin VB.Label Label4 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "定时器的初值："
      ForeColor       =   &H00FF0000&
      Height          =   180
      Left            =   240
      TabIndex        =   6
      Top             =   1920
      Width           =   1260
   End
   Begin VB.Label Label3 
      BackStyle       =   0  'Transparent
      Caption         =   "定时器的位数(Bit)："
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   840
      TabIndex        =   3
      Top             =   720
      Width           =   2055
   End
   Begin VB.Label Label2 
      BackStyle       =   0  'Transparent
      Caption         =   "欲产生的振荡频率（Hz）："
      ForeColor       =   &H00FF0000&
      Height          =   375
      Left            =   360
      TabIndex        =   2
      Top             =   1320
      Width           =   2175
   End
   Begin VB.Label Label1 
      AutoSize        =   -1  'True
      BackStyle       =   0  'Transparent
      Caption         =   "晶振的振荡频率（M)："
      BeginProperty Font 
         Name            =   "楷体_GB2312"
         Size            =   10.5
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H00FF0000&
      Height          =   210
      Left            =   360
      TabIndex        =   0
      Top             =   120
      Width           =   2265
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
M = Text1.Text
N = Text2.Text
F = Text3.Text
If M = "" Or N = "" Or F = "" Then
MsgBox ("请确认你是否输入了数据")
End
End If
X = 2 ^ N - M * 10 ^ 6 / (24 * F)
Text4.Text = Round(X, 0)
Label4.Caption = "定时器的初值（十进制）"
End Sub

Private Sub Command2_Click()
M = Text1.Text
N = Text2.Text
F = Text3.Text
If M = "" Or N = "" Or F = "" Then
MsgBox ("请确认你是否输入了数据")
End
End If
X = 2 ^ N - M * 10 ^ 6 / (24 * F)
X1 = Round(X, 0)
X2 = Hex(X1)
Text4.Text = X2
Label4.Caption = "定时器的初值（十六进制）"
End Sub

Private Sub Command3_Click()
End
End Sub