Chapter
1
•An
Introduction to Computers and Visual Basic.NET
Outline and Objectives
•Introduction
to Computers
•Using
Windows
•Files
and Folders
•An
Introduction to Visual Basic.NET
•Biographical
History of Computing
Introduction
to Computers
•Personal
computer
•Generally,
a computer that is operated by one person at a time
Computer
uses in Society
•Banking
– customer transactions
•Airlines
– reservations system
•NASA
– control satellites
•Internet
– email, research, shopping
Programs
Students Will Create in This Text
•Create
and manage a list of friends' addresses and phone numbers
•Calculate
loan payments and amortization
•Computations
to support other course work
Communicating
with the Computer
•Machine
language – low level, 0 and 1, hard for humans to understand
•VB.NET
– high level, understood by humans, consists of instructions such as Click, If,
Do
Computers
and Complicated Tasks
•Tasks
are broken down into instructions that can be expressed by a computer language
•A
program is a sequence of instructions
•Programs
can be only a few instructions or millions of lines of instructions
Servers
•A
server can be almost any computer
•A
server provides resources to other computers
•Files
•Internet
•Printers
All
Programs Have in Common:
•Take
data and manipulate it to produce a result
•Input
– Process – Output
•Input
– from files, the keyboard, or other input device
•Output
– to the monitor, printer, file, or other output device
Hardware
and Software
•Hardware
– the physical components of a computer
•Keyboard
•Disk
drive
•Monitor
•Software
– The instructions that tell the computer what to do
Programmer
and User
•Programmer
– the person who solves the problem and writes the instructions for the
computer
•User
– any person who uses the program written by the programmer
Problem
Solving
•Developing
the solution to a problem
•Algorithm
– a step by step series of instructions to solve a problem
Types
of Problems in this Text
•Business
computations
•Managing
records
•Managing
lists
•And
more
VB.NET
•BASIC
developed at Dartmouth in the early 1960s
•Visual
Basic created by Microsoft in 1991
•VB.NET
similar to Visual Basic, but more powerful
Internet
•A
connection of thousands of networks around the world – each network has
•A
computer and one or more routers
•Router
is a device or computer connected to two or more networks
•All
use TCP/IP
World
Wide Web vs. Internet
•World Wide Web is a collection of
information stored on servers throughout the Internet known as Web servers.
•HTTP – HyperText Transfer Protocol enabled researchers to
share data – creating a "web" of information
•Internet is used to access documents on
the World Wide Web
•Pointing
•Hovering
•Clicking
•Double-Clicking
•Dragging
Windows
and Its Little Windows
•Title
Bar
•Active
window
Using
the Notepad
•Reviewing
Notepad to learn more about Windows application
•Notepad
is an item in the Accessories menu
•Notepad
can be used to create simple data files
Parts
of the Window
•Restore
button
•Vertical
scroll bar
•Horizontal
scroll bar
•Menu
bar
1.3
Files & Folders:
•Disk
is a permanent storage.
•A
disk can store thousands of files.
•A
disk drive is identified by a letter.
•To
organize your files you have to store them in different folders (directories).
Using
Windows Explorer
•Start
| Run | type in Explorer
•Folder
pane on left
•Detail
pane on right
To
Display File Extensions
•Alt/T/O
•Click
View
•Uncheck
"Hide file extensions for known file types"
•Click
OK
To
Create a New Folder
•Highlight
the folder that is to contain the new folder
•File
| New | Folder
•Type
in a name for the new folder and press Enter
To
Rename a Folder or File
•Right
click on the folder or file
•Click
on Rename
•Type
in a new name (or alter the current name) and press Enter
To
Delete a Folder or File
•Right
click on the folder
•Click
on Delete
•Click
on Yes
To
Copy a Folder or File
•Right
click on the folder file
•Click
on copy
•Open
the folder where the copy is to be placed
•Right
click on the second folder
•Click
on Paste
To
Move a Folder or File
•Right
click on the folder or file
•Click
on Cut
•Open
the folder where the copy is to be moved
•Click
on the second folder with the right mouse button
•Click
on Paste
Chapter 1 - VB.NET by Schneider
