An icon is a picture used to identify a program or
another type of object on the computer. As such, the small pictures that
appear on the computer desktop are called icons. Besides the desktop, there
are many other places where you will see icons when using the computer.
There are two entities that mainly need to interact
- As a person using the computer, icons allow you to familiarize with
the various programs that are installed in a computer. Every
application or every category of application has its own icon. This is easily
possible because every person who creates an application has the
possibility of providing a special icon for that particular
- The operating system also has an interior mechanism to identify an
icon or a type of icon and associate it with a particular application
or a series of applications of the same type.
Microsoft Windows ships with various icons for its
own use. For example, every version of Microsoft Windows ships with a
special icon for the My Computer program. There is also a special icon for
Recycle Bin, etc.
The sizes of icons are standardized and they should not
have just any random dimensions. For example, the icons on the desktop are
32x32 pixels. Sometimes, the icons display in a 16x16 dimension.