Internal Lab Registeration
• http://www.cit.just.edu.jo/
labreg/lab/signup.aspx
• http://www.just.edu.jo/mu
nzer/
Chapter 1- Visual Basic
Schneider
1
Chapter 1
An Introduction to Computers and
Visual Basic
Chapter 1- Visual Basic
Schneider
2
Outline and Objectives
–Introduction to Computers
–Using Windows
–Files and Folders
–An Introduction to Visual Basic
Chapter 1- Visual Basic
Schneider
3
Parts of a Computer System:
• Hardware: Electronic Devices
• Software: Instructions and Computer
Programs
Chapter 1- Visual Basic
Schneider
4
Main components of Hardware:
• Input : Keyboard, Mouse
• System unit:
– Random Access Memory (RAM)
– Central Processing Unit (CPU)
• Output: Monitor, Printer
• Secondary Storage: Disk Drive
Chapter 1- Visual Basic
Schneider
5
Random Access Memory (RAM)
• Stores program instructions and data needed
for processing.
• Stores intermediate and final results of
processing.
• Contents are erased when computer is
turned off or reset.
Chapter 1- Visual Basic
Schneider
6
Programming Languages:
• Machine Language
• High level Language
Chapter 1- Visual Basic
Schneider
7
Machine Language
• The fundamental language of the computer’s
processor, also called Low Level Language.
• All programs are converted into machine language
before they can be executed.
Chapter 1- Visual Basic
Schneider
8
High Level Language
• Computer (programming) languages that
are easier to learn.
• Uses English like statements.
• Examples are C++, Visual Basic, and Java
Chapter 1- Visual Basic
Schneider
9
Software:
• Instructions for the hardware.
• A collection of instructions is called a
program.
Chapter 1- Visual Basic
Schneider
10
Using Windows
• Basic techniques to use the mouse:
–
–
–
–
–
Pointing
Clicking
Dragging
Double-Clicking
Hovering
Chapter 1- Visual Basic
Schneider
11
Key Terms in using Windows
• Title Bar
• Active window
• Dragging a window
Chapter 1- Visual Basic
Schneider
12
Using Windows
– Reviewing Notepad to learn more about
Windows applications
– Notepad is an item in the Accessories menu
Chapter 1- Visual Basic
Schneider
13
Files & Folders:
• A disk can store thousands of files.
• To organize your files you have to store them in
different folders (directories).
• File name consists of letters, digits, periods and
other assorted characters.
• The following character cannot be used in a file or
folder name /, \, ?, *, :, ”, <, >, |
• A File name can contain up to 215 characters
Chapter 1- Visual Basic
Schneider
14
Key Terms in using Folders
• Root folder
• Path: A nested sequence of folders
– Example: A:\Temp\MyProjects\
• File Specification: A drive letter, path, and
filename
– Example: A:\Temp\MyProjects\Example.vbp
Chapter 1- Visual Basic
Schneider
15
History of Visual Basic:
• BASIC stands for Beginner’s All-purpose
Symbolic Instruction Code.
• BASIC was developed by John Kemeny and
Thomas Kurtz in mid-1960s.
• Visual Basic was released in 1991 by the
Microsoft Corporation.
Chapter 1- Visual Basic
Schneider
16
Introduction to Visual Basic:
• A language used to create windows
applications.
• Programs are developed with a Graphical
User Interface or GUI.
• The instructions executed in the program
are controlled by events.
Chapter 1- Visual Basic
Schneider
17
Terminology used in Visual Basic:
•
•
•
•
•
Form
Control
Object
Properties
Event
Chapter 1- Visual Basic
Schneider
18
Steps to Design a Visual Basic
Application
• Design the appearance of the window that the user
sees.
• Determine the events that the controls on the
window should recognize.
• Write the event procedures for those events.
Chapter 1- Visual Basic
Schneider
19