ACKNOWLEDGEMENT

In the name of Allah, the Most Gracious and the Most Merciful, Alhamdulillah and ll the praises to Allah for the strenghth and His Blessing which enabled us to complete the documentation of this eBook. I would like to express our appreciation to our POLISAS Head of Electrical and Engineering Department , Head of DEP program for their support and encouragement in producing this eBook. Thank you as well to Mr Nor Shukor Ali who is patiently giving advices along the way.

My gratitude also to family and friends who have been involved either directly or indirectly because without their supports, this eBook would not have been completed.