Modes of channel operation

Mode of channel operation define accessing mode of the medium for send and receive data. Types and examples of different types of modes are follows

Simplex

Data in simplex channel is always moves in one direction. Simplex is suitable for many kind of application where reply is necessary because it is not possible to send back error or control signals to the transmit end.

Proper Case String VB

Function Name : StrConv

Convert a string into desire specified format.

Syntax

StrConv(String,VbStrConv) as String 

Difference Between Coupling and Cohesion

Coupling Indicate the relationship between the different modules. Cohesion indicates a relation inside of a single module.

Resized and Saved Uploaded Image in PHP

Image resizing is an important task because if uploaded image size is bigger than requirement and we are not resizing it then it will consume server space and bandwidth which is not good.
So Resizing is necessary .you need to use four PHP GD functions for achieve this.

• getimagesize
• imagecreatetruecolor
• imagecreatefromjpeg
• imagecopyresized
• imagejpeg