.I always have the ambition of pursuing the MS program right from my childhood days.
Well this sounds a bit odd. When you say "from my childhood", the reader feels that what could child would know about MS program. I think you better rephrase this line.
During my undergraduate study subjects like Communication systems, Signal processing, VLSI, Control systems, Microprocessors have been my favorite subjects.
During my undergraduate studies, my favorite subjects have been Communication systems, Signal processing, VLSI, Control systems and Microprocessors.
The electronic chip has always fascinated me.
I feel this is a better line to start your para :)