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An Introduction to Computers and Visual Basic

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Visual Basic was developed in mid-1991 by the Microsoft Corporation. ... Introduction to Visual Basic: Language used to create windows application. ... – PowerPoint PPT presentation

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Title: An Introduction to Computers and Visual Basic


1
Chapter 1
  • An Introduction to Computers and Visual Basic

2
Parts of a Computer System
  • Hardware Electronic Devices Circuits
  • Software Instructions or Computer Programs

3
Software
  • Instructions for the hardware.
  • A collection of lines of instruction is called a
    Program.

4
Types of Software
  • System Software
  • Application Software

5
System Software (Operating System)
  • Is the interface between you and hardware.
  • Is the interface between application software and
    hardware.

6
Examples of System Software
  • UNIX
  • MS-DOS
  • Windows 98 / NT
  • Windows 2000
  • Windows XP

7
Examples of Application Software
  • Word Processing
  • Spreadsheet
  • Accounting
  • Programming Languages Visual Basic, C, Pascal

8
Using Windows
  • Basic techniques to use the mouse
  • Pointing
  • Clicking
  • Dragging
  • Double-Clicking

9
Disks Folders
  • Disk is a permanent storage.
  • Disk management is handled by the Operating
    System.
  • A disk can store thousands of files.
  • To organize your files you have to store them in
    different folders (directories).

10
History of Visual Basic
  • BASIC stands for Beginners All-purpose Symbolic
    Instruction Code.
  • Developed by John Kemeny and Thomas Kurtz in
    mid-1960s.
  • Visual Basic was developed in mid-1991 by the
    Microsoft Corporation.

11
Introduction to Visual Basic
  • Language used to create windows application.
  • Provides a Graphical User Interface or GUI.
  • The sequence of instructions executed in the
    program is controlled by events.

12
Terminology used in Visual Basic
  • Forms
  • Controls
  • Objects
  • Properties
  • Events
  • We will use English terminology to keep them
    straight

13
Steps to Design a Visual Basic Application
  • Decide on the Interface for the user.
  • (Forms Controls)
  • Determine which events the objects on the window
    should recognize.
  • Write the events procedures for those events.
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