Printed circuit boards are used for an advanced mechanical support. These also enable electrical connection between the electronic components. These does this task by making use of the conductive pathways, signal traces and tracks. These are also helpful for the manufacturing of computers and business machines. They are flat laminated composites fabricated from non-conductive substrate resources. Printed circuit boards have several layers of copper and are suited for the high density applications. These are the best electronic appliances, which can be used with ease.