Che 117
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ChE 117. Motivation Lots of Tools Excel • Mathematica MathCAD • Calculators Matlab • Polymath Can’t always use “Canned Programs” i.e. binary phase equilibria Data manipulation Process control and data acquisition Excel macro language (VBA) Web pages.

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ChE 117

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Che 117

ChE 117

Motivation

Lots of Tools

Excel •Mathematica

MathCAD • Calculators

Matlab • Polymath

Can’t always use “Canned Programs”

i.e. binary phase equilibria

Data manipulation

Process control and data acquisition

Excel macro language (VBA)

Web pages


Che 117

  • Programming language: Visual Basic

    • Interface with Excel (VBA)

    • Similar to Fortran, C, C++, etc

    • PC-based DAQ (data acquisition) and control

    • High-level language (vs assembly)

  • What is: Visual Basic .NET

    • Computer interface

    • List of instructions

    • Contains Interpreter

VB  machine language “on the fly”


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Input

Manipulate

Output

  • What is a Program?

    • Road map

    • Set of instructions

    • Good for repetition

  • Example: convert °F to °C or °C to °F

    • GUI

    • ID Parts!


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  • Example Program (manipulation)

    • Average 3 numbers (10, 12, 15)

    • Sub Avg()

    • n1 = 10

    • n2 = 12

    • n3 = 15

    • avge = (n1 + n2 + n3) / 3

    • MsgBox avge

    • End Sub


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  • Decisions (“If” statements)

    • Sub test2()

    • label = "F"

    • TF = 212

    • If label = "F" Then

    • TC = (TF + 460) / 1.8 - 273

    • MsgBox TC

    • End If

    • End Sub

  • “If – Then – Else - Endif

    • Sub test3()

    • label = "C"

    • Tin = 100

    • If label = "F" Then

    • Tout = (Tin + 460) / 1.8 - 273

    • Else

    • Tout = (Tin + 273) * 1.8 - 460

    • End If

    • MsgBox Tout

    • End Sub


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  • Loops (“If” statements)

  • Add numbers 1 - 10

    • Sub looper1()

    • sum = 1

    • n = 1

    • 10 If n < 10 Then

    • n = n + 1

    • sum = sum + n

    • GoTo 10

    • End If

    • MsgBox sum

    • End Sub

  • Loops (For – Next)

    • Sub looper2()

    • sum = 0

    • For i = 1 To 10

    • sum = sum + i

    • Next i

    • MsgBox sum

    • End Sub


Ms excel visual basic vba vb 6

Worksheets

Modules

sub & function procedures

Chart Sheets

User Forms

and objects

(VBA code)

Workbook

VB Editor / Modules

MS Excel & Visual Basic (VBA ~ VB.6)

  • Excel Environment


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  • Example Program (manipulation)

  • Set up macro to calculate an average… use example as template.

  • Run the macro

  • Set up Form Button to run macro


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  • Problem Solving Exercise (in groups)

  • Set up macro to convert 100 kg to lbs or lbs to kg

  • Display result in msgbox

  • Run the macro

  • Set up Form Button to run macro


  • Login