How bugs can effect your software project?

Its saying that "prevention is better then cure" , sooner you fix the software bug , the better.

It does not matter if you are developing the software application developing ,android application for the android market , iPhone application for the apple app store ,blackberry application , windows mobile application , any cross platform mobile application  , re-branding the Android experience for an operator ,or creating the customized version of android for a device manufacturer , the bugs will delay your shipment and will cost you money. 
 
The test driven development is a good approach for finding the bug . With this practice we can find bugs early during the stage of development so it can be fixed as soon as possible.
 
The increase in productivity can be clearly appreciated in a project where a software development team uses this technique versus one that is writing tests at the end of the development cycle.
 
In a study conducted by the National Institute Of Standards and Technology(USA) in 2002 it was reported that software bug costs the economy $59.5 billion annually. More than a third of this cost could be avoided if better software testing was performed.