As a students of embedded what is the scope of advanced embedded system? Is it a better career option?

The scope is as wide or narrow as you decide. That is, I've use single chip devices (Microchip PICs) at 20 cents each with no external parts to solve a problem up to a big board with 3 DSPs and a big MCU. So scope includes not only your usual electronics course but software as well. You'll pick up assembler, C and more because your design often will be programmed by others. You start by delivering the design up on its feet with a working example of how to write an app.

Added with edit. I looked at your other posts and you might find yourself tasked with process control. For that you pick your courses to include exposure to PLC modules.

There's a lot to learn so in about 10 years you'll get there.

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